written and illustrated
by
Ms. Burke’s Fifth Grade Class
Stony Point Elementary School
March 10, 2005
At last, another project finished. It took
about eight weeks to research, sketch, do our scratchboards,
and write a brief paragraph describing our invention. Our
inventions had to be invented between 1890 and the 1940s.
After sketching rough drafts, we covered the backs of them
with chalk. We then placed the drawing over a blank
scratchboard and traced the lines on the sketch. The chalk lines
appeared on the scratchboard and we etched them. The
scratchboards were difficult to do, because many of our
inventions had so many round shapes in their design. It’s
nearly impossible to make round shapes with a scratchboard
tool.
We particularly enjoyed this project because it was so
hands-on. We hope we can do another project like this in the
future.
Pilar and Mariel
The process…
The Virginia 5th grade Standards of Learning require that
students study 20th century contributions. This book came about
as a consequence of our desire to meet the standards as well as
to produce a book of artistic and literary merit.
Initially, we immersed ourselves in the information
contained in piles of books from our classroom and school library.
We created a brainstorming list of inventions between the years
1890-1949. We talked about which of these inventions still
impact our lives today. Each student settled on one invention.
We researched in books and the internet and found pictures of
our inventions. Each student studied their topic, sketched the
topic, converted it to scratchboard, and wrote about it.
The first step in the art process was to sketch our image.
Using our pencil sketches and chalk paper as carbon paper, we
transferred the image onto the scratchboard. Using those lines
as a guide, we scratched into the black ink of the scratchboard
with a stylus. The detail work was done using different scratching
techniques.
For the writing process, we began with the information in
hand and we did more research on our topic. We wrote our
paragraphs and did the word processing on the computer. The
final step was to mount our scratchboards and writing in an
aesthetic manner and prepare them for our group display.
The worst invention ever—
The Atomic Bomb
By Mariel Andersen
The atomic bomb was created by a group of nuclear experts with
very violent minds. They discovered a quick way to kill a lot of people
by discovering how to split an atom. When you do that to a lot of atoms
making up a lot of things, you damage the living and change the
surviving molecules of structures and objects. An example of this
chemical change; a school girl’s rice and barley lunch was completely
carbonized. This powerful weapon was used on Hiroshima, Japan on August
6th, 1945, killing 56% of all Hiroshima residents and making the ruler
of Japan, Hirohito, surrender to the U.S. Army, so we won the war
against the Japanese. Where it detonated, temperatures reached
7,000,000 degrees centigrade making some things actually vanish. Their
atoms were so damaged by the heat that they cracked into pieces and did
not regain their shape.
The atomic bomb had been tested before in New Mexico. The team
that tested the bomb used only thirteen pounds of the explosive and
made a hole 6 ft. deep and 1,200 ft. in diameter. The most destructive
thing it did in testing was make a 60 ft. tall metal tower disappear
from existence. The unfortunate people who tested it only wore
protective eyewear, and the majority of them received a fatal amount of
radiation and died in the next ten or fifteen years of radiation
sickness. Countless amounts of innocent citizens of Hiroshima and
Nagasaki got that sickness and passed it down to their children
creating chromosome injury and stunted growth.
Basically, that was what the atomic bomb was famous for — the
destruction of Hiroshima and Nagasaki and all hope of an alliance with
Japan.
Band-Aid
By Abbi Pence
The band-aid was invented by Earle Dickson in the
1920’s. The band-aid was invented because Earle’s wife had a
lot of accidents in the kitchen, and she needed quick relief for
her hand. It was owned by Johnson and Johnson Company.
Earle was rewarded by the Johnson and Johnson Company by
being the vice- president of the Company.
The Radio
By: Abigail Williams
The radio was created by Nikola Tesla. The first
radio was used across the Atlantic Ocean on December
12, 1901. In 1865, the radio was promoted and
popularized by Guglielmo Marconi. Today, radios are
very popular. Radios can be used in many different
ways. With every new radio they make, the more hi-tech
they get.
The Battery
By
Allison Higgins
The alkaline battery was invented by Thomas Edison in
1901. He invented it to make a more convenient and storable
battery source. It has 2 terminals, 1 is a positive terminal and
the other is a negative terminal. It has a metal bar going through
the center and has a foil shell. There are acidic liquids inside the
shell, along with the metal rod. When the object the battery is in
is turned on, it creates friction. The friction creates energy that
makes the object work.
The Car Radio
By Alec Beretz
The Car radio was invented in 1929 by William Lear, Elmer Wavering,
Motorola, and other companies in the business. At first, radios were
attached to the dashboard of a car and ran on their own batteries. That
would be like nailing a juke box to the inside of your car. These were called
travel radios.
Unfortunately, these didn’t work very well. Motor interference and
weak speakers made the radio hard to listen to. Soon, people created radios
that would be specified for cars (the radio would be wired into the car,
rather than laid on the dashboard and nailed in).
There was a problem with these too. You couldn’t listen to it without
turning off the car. Then finally, in the 1930’s, they nearly perfected it.
They stopped using different batteries for the radio, and made it connect to
the car battery. Now when they used the car, they could turn on the radio
and listen to music while driving. Finally! I was getting tired of this lame
20th century technology.
Latex
By: Cody Crickenberger
Did you know latex grows on trees in Thailand,
Indonesia, Malaysia, and Sri Lanka? All of these
places, as you know, are islands that the tsunami hit.
In 1876, a man by the name W. Schloman invented
latex. Latex is used for many things including paint,
gloves, socks and band-aids.
Color Photography
By Connor Lilley
Color photography was not invented by one person. It was
patented in 1903. In 1848, Edmond Becquerel discovered a way to
make photographs in color temporarily. He put a layer of pure
silver chloride on the photo. In 1911, R. Fisher discovered
chromogene developer, this gave photos better color.
COTTON CANDY
By: Amanda Jackson
Cotton candy was invented in 1897. Cotton candy’s first
name was Fairy Floss. In England, it’s called candy floss. Cotton
candy was first eaten in Nashville, Tennessee, at the St. Louis
World Fair. At the fair, they sold over 68,655 boxes for 25 cents
per box. My picture is of an original cotton candy machine.
Radar
By Daniel Nadkarni
Radar was invented in 1904 by Christian
Hulsmeyer from Germany. Radar stands for
RAdio Detection And Ranging. Radar can “see”
objects such as landmasses, weather formations,
and other vessels by sending out sonar and
receiving the signals and projecting them on a
screen. Radar was first used by the Allies in 1941
for use in the military.
8
V
FORD
By Erik Berininger
The Ford V 8 was invented by the Ford Company in
1934. With its single piece engine, the Ford V8 was 20 years
ahead of its time. The Ford V8 was considered the American
Dream car. It had 65 horse power, weighed 2,898 lbs, and cost
only $610! At first, Henry Ford advertised with “The American
people can have any color car they want as long as the color they
want is black,” but after cars came in color, he used “get behind the
wheel, try the new Ford feel.”
By
Heather Crosby
Egyptian’s would make flat, un-even pizzas. They
would bake them inside mud ovens in the 1900’s.
Raffaele Esposit was known for inventing the
pizza, in 1889, in Italy.
The word pizza is believed to be an Old Italian
word meaning “a point”.
American soldiers in War World II named pizza
a very enjoyable meal.
Maxwell House Coffee
By Holly Harper
WOW….. Did you know that Americans consume 4,848 cups of
coffee per second, 24 hours a day? Never ever put coffee creamer near a fire, because
you might start a huge fire. Creamer is extremely flammable. Don’t drink coffee at
night if you are planning to sleep. You will be jumping off the walls, or worse! Did you
know that it takes 5 years for a coffee tree to yield its first crop? Did you know that if
you want an adventurous meal, that you can use coffee and tea to tenderize meat, flavor
liquor and color eggs?
The Ferris Wheel
By: Tessa Diehl
The first Ferris wheel was invented by George W. Ferris. He
invented it to be a cool new invention for the 1893 World’s Fair. It
was supported by two 140 foot steel towers. Its 45 foot axle was
the largest single piece of forged steel (at that time) in the world.
The wheel had a diameter of 250 feet, a circumference of 825 feet,
and its maximum height was 264 feet. The first Ferris wheel had
36 wooden cars that could hold 60 people each. It was powered by
two 1,000 horsepower reversible engines. It was taken down in mid
1894 and was scraped in 1906, but before then it made a lot of
profits.
Crayola Crayons
By: Josh Fitzgerald
Crayola Crayons were invented in 1903. There
were only eight colors. Now Crayola Crayons can
glow in the dark, sparkle like glitter, and even
wash off walls. Crayola Crayons have come a long
way since 1903.
The Vacuum Cleaner
By: Josh R.
In 1901, a man named Cecil discovered the
vacuum cleaner! He tried many strange experiments
like trying to suck up dirt from pillows and on
furniture until his lips started to hurt. The vacuum
cleaner took two people to operate but it really did the
job.
The Tootsie Roll
By: K.J. Darling
The Tootsie Roll, created by Leo
Hirshfield in 1896 is a sweet and tasty
sensation. No doubt about it, America loves
“The Tootsie” in all forms. The original
Tootsie Roll is the most popular.
Did you know…
Leo Hirshfield named his candy after his 5
year old daughter, Tootsie.
The candy was used in World War II as a
ration, and was given to soldiers as “quick
energy”.
In 1931, The Tootsie Pop was invented.
By: Kaila Brown
Basketball was invented in 1891 by James Naismith.
At first, they used a bucket with a soccer ball. Now we have
a hoop for the basketball. We also have rules, for example;
if you double dribble with the basketball, you’ll have to give
the ball to the other team. We even have referees who tell
you to give the ball to the other team.
Teddy Bear
By: Keyonna Carter
Theodore Roosevelt was the 26th president of the United
States of America. The teddy bear was named after him (Teddy).
The United States of America and Germany (in some ways) can
both take credit for the first teddy bear. The inventor was Morris
Michtom. Today, many children still love to play with their own
teddy bears.
The Air Conditioner
By Kimberly Abel
The air conditioner was invented by Willis Haviland
Carrier in 1902. He graduated from Cornell University with
a master in Engineering. In 1921, Willis invented the first
refrigeration machine. He first made air conditioning for
large spaces, such as department stores and movie theaters.
In 1928, Willis Carrier made the first home “Weather
maker”. Homes could be cooler and people didn’t always
have to run out to places to get cooler.
AQUALUNG
By Lucy Miller
The Aqualung was made in 1943 by Jacques Cousteau and
Emile Gagnan, a French industrial gas control systems engineer.
It is for divers to stay up to two hours underwater. The French
Navy also used the Aqualung to put bombs under enemy ships.
It is used for business and pleasure alike.
The Disposable Diaper
BY Madeline Cohen
The Disposable Diaper was invented by Marion Donovan in 1951. Her
amazing success was with the boater (a waterproof cover for cloth diapers
first made out of a shower curtain). Like many mothers, she was fed up with
leaky cloth diapers and soaking sheets. Many manufacturers wouldn’t buy
the boaters. They thought they were a waste of money but finally a company
bought the idea and made a fortune with them. After everyone loved
Donovan’s first idea, they made millions with the disposable diaper. They
were not as easy to create as they look though. The diaper must prevent rash
by pulling moisture away from the babies’ skin instead of retaining it
internally. After a while, Marion Donovan sold her business for 1,000,000
dollars.
Coca-Cola
By: Morgan Russell
Soda Pop got its name from the wire stopper pushed down into the
bottle and it made a popping noise. Coca-Cola Enterprises was established
in 1986, but the roots started in 1899 when the first Coca-Cola bottle and
operation began. The new bottle took its shape from the seed pod of the
coca tree used to make chocolate. John Pemberton created the Coca-Cola
syrup in 1886. In 1923, Robert Woodruff became president of the CocaCola Company. A lot of people drink Coca-Cola today and millions of
bottles are sold everyday.
Penicillin
Nelly Francis Gibson
In 1929, Alexander Fleming accidentally discovered penicillin while working in
his lab. Today many people use penicillin for infections and one example is strep throat.
When the United States entered World War II, the Red Cross used penicillin. Today,
veterinarians also use penicillin for animals.
Crystal Quartz Watch
By Nyssa Cornelius
The crystal quartz watch was invented by Peter Henlein in
1906. It was a great convenience to many people serving as the
portable watch. It was a better and more efficient on-the-go time
telling watch instead of carrying around one big clock everywhere
you go.
It was also the first self contained battery driven watch. No
chords or anything, a no hassle watch that you could take with you.
The Light Bulb
By Olivia Bascle
The firts electric light was made in 1800 by Humphry Davy, an English scientist. He
experimented with electricity, and invented a battery. When he connected some wires to his
battery and a piece of carbon, the carbon produced light. He called it an electric arc.
Much later in 1860, the English physicist Sir. Joseph Wilson Swan was determined to
make a practical, long- lasting electric light. In 1878, he showed his new electric lamps in
Newcastle, England.
After Charles Francis Brush manufactured some carbon arcs to light a public square in
Cleveland, Ohio, the inventor, Thomas Alva Edison experimented to make it glow and be long
lasting. In 1879, Edison discovered that a carbon filament in a non-oxygen bulb glowed and did
not burn up for 40 hours. Edison finally invented a bulb that could glow for more than 1500
hours.
Thomas Alva Edison was born in Milan, Ohio, on February 11, 1847. He was only in
school for 3 months. He used his spare time mainly to experiment with electrical and mechanical
apparatus.
Dubble Bubble
Bubble Gum
By,
Pilar Marshall
The first version of Dubble Bubble was invented in
1906 by Frank Henry Fleer. It was called Blibber-Blubber.
His recipe was later perfected in 1928 by an employee of the
Frank H. Fleer Company named Walter Diemer. He
called it Dubble Bubble. His recipe is still around today,
enjoyed by millions of children and adults alike around the
world.
PEZ
A Candy Revolution
By: Reed Shaw
PEZ candy was originally invented in 1927 by Edward Haas III in
Austria as a breath mint for adult smokers. It was named after the German
name, Pfefferminz, shortened, PEZ. In 1947, the first PEZ dispenser had
most of the same characteristics as a cigarette lighter. In 1952, new fruit
flavors conquered the candy market. The four first flavors were cherry,
lemon, orange, and strawberry. Cartoon characters first started appearing on
PEZ dispensers in 1952.
The Wright Flyer
By: Reid Dickerson
On Dec.17, 1903 at Kitty Hawk, North Carolina, U.S.A.,
Orville and Wilbur Wright saw their dream come to life as the
Wright Flyer flew 120 feet in 12 seconds on the first test flight.
Orville and Wilbur were born in Dayton, Ohio and they started a
bicycle shop. Then they decided to sell the shop and start building
airplanes. The Wright flyer was a fabric-covered biplane with a
wooden frame, 2 propellers, and a 12 horsepower engine. Five
years after the first flight, Orville remained in the air for 1 hour and
2 minutes.
The Yo-yo
By Shae Douglas
No one really knows who the original inventor of the yo-yo
was. The yo-yo has been around since the mid 1930’s. It has been
around for children to play with for a long time and it may be the
second oldest toy, after the doll, of course! The yo-yo is popular
for all generations, including kids 1-100.
Toll House Chocolate Chip Cookies
By: Sherry May Wheeler
Ruth Wakefield of Whitman, Massachusetts invented
Toll House Chocolate Chip Cookies, in 1930. She was
making chocolate cookies and ran out of baking chocolate, so
she broke apart a bar of semi-sweet chocolate. Andrew
Nestle, who is a very famous chocolate maker, gave her the
chocolate bar. The chocolate didn’t melt, so she had chunks
of chocolate in the dough and now we have chocolate chip
cookies!!!
VELCRO
By: Smitha Theriault
The Velcro invention was made by George de Mestral, in
the summer of 1948! Velcro is made out of stiff hooks like burrs
on one side and soft loops like string on the other. George de
Mestral formed many Velcro Industries and was selling
sixty-million yards of Velcro per year! Velcro was a rival with
the zipper.
Typewriter
By Travis Williams
The first patent for the typewriter was obtained on
June 23, 1868. The first author to submit a typed
manuscript was Mark Twin Shokes. The typewriter
was the beginning of a revolution in communication.
On the typewriter, you use one key for each letter
and number which strikes upward onto a flat plate
producing a carbon impression of the letter or
number on paper.
ZIPPER
By Will Bollinger
You can use zippers to zip things up and down.
You can zip your pants, sweatshirt, purse, binder and
even shoes!!! Without zippers, we would use
buttons! Also, zippers make great tongue twisters,
like “Zippy zipped Zoey’s Zipper.” Zippers were
invented in 1893 by WHITCOMB L. JUDSON. Well… I
don’t have anything else to say about zippers
so…Bye.
Polygraph Lie Detector
Devin Dickerson
John Larson invented the Lie Detector in 1921. Polygraph
comes from the fact that the machine records several different
body responses simultaneously as the individual is questioned. It
works by a series of sensors that are attached to the body. It can
sense tenseness by the blood pressure or by the heart.
1889
1891
• Joshua Pusey invents the matchbook.
• Sir James Dewar and Sir Frederick Abel co-invent Cordite - a type of smokeless gunpowder.
• Jesse W. Reno invents the escalator.
1892
• Rudolf Diesel invents the diesel-fueled internal combustion engine.
• Sir James Dewar invents the Dewar flask or vacuum flask.
1893
• American, W.L. Judson invents the zipper.
• Edward Goodrich Acheson invents carborundum.
1895
• Lumiere Brothers invent a portable motion-picture camera, film processing unit and projector
• Lumiere Brothers using their Cinematographe are the first to present a projected motion picture
1896
• American, H. O'Sullivan invents the rubber heel.
1898
• Edwin Prescott patents the roller coaster.
• Rudolf Diesel receives patent #608,845 for an "internal combustion engine" the Diesel engine.
1899
• I.R. Johnson patents the bicycle frame.
• J.S. Thurman patents the motor-driven vacuum cleaner.
I900
• The zeppelin invented by Count Ferdinand von Zeppelin.
• Charles Seeberger redesigned Jesse Reno's escalator and invented the modern escalator.
1901
1902
1903
1904
1905
1906
• King Camp Gillette invents the double-edged safety razor.
• The first radio receiver, successfully received a radio transmission.
• Hubert Booth invents a compact and modern vacuum cleaner.
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Willis Carrier invents the air conditioner.
French physicist George Claude invents neon light.
The lie detector or polygraph machine is invented by James Mackenzie.
The birth of the Teddy Bear.
George Claude invented neon light.
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Edward Binney and Harold Smith co-invent crayons.
Bottle-making machinery invented by Michael J. Owens.
The Wright brothers invent the first gas motored and manned airplane.
Mary Anderson invents windshield wipers.
William Coolidge invents ductile tungsten used in lightbulbs.
• Teabags invented by Thomas Suillivan.
• Benjamin Holt invents a tractor.
• John A Fleming invents a vacuum diode or Fleming valve.
• Albert Einstein published the Theory of Relativity and made famous the equation, E = mc2.
• Mary Anderson receives a patent for windshield wipers.
• William Kellogg invents Cornflakes.
• Lewis Nixon invents the first sonar like device.
• Lee Deforest invents electronic amplifying tube (triode).
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
• Leo Baekeland invents the first synthetic plastic called Bakelite.
• Color photography invented by Auguste and Louis Lumiere.
• The very first piloted helicopter was invented by Paul Cornu.
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The gyrocompass invented by Elmer A. Sperry.
Cellophane invented by Jacques E. Brandenberger.
Model T first sold.
J W Geiger and W Müller invent the geiger counter.
Fritz Haber invents the Haber Process for making artificial nitrates.
• Instant coffee invented by G. Washington.
• Thomas Edison demonstrated the first talking motion picture.
• Georges Claude displayed the first neon lamp to the public on December 11, 1910, in Paris.
• Charles Franklin Kettering invents the first automobile electrical ignition system.
• Motorized movie cameras invented, replaced hand-cranked cameras.
• The first tank patented by Australian inventor De La Mole.
• Clarence Crane created Life Savers candy in 1912.
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The crossword puzzle invented by Arthur Wynne.
The Merck Chemical Company patented, what is now know as, ecstasy.
Mary Phelps Jacob invents the bra.
Gideon Sundback invented the modern zipper.
• Garrett A. Morgan invents the Morgan gas mask.
• Eugene Sullivan and William Taylor co-invented Pyrex in New York City.
• Radios tuners invented, that received different stations.
• Stainless steel invented by Henry Brearly.
• Gideon Sundback patented the modern zipper (not the first zipper).
• The superheterodyne radio circuit invented by Edwin Howard Armstrong.
• Charles Jung invented fortune cookies.
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The pop-up toaster invented by Charles Strite.
Short-wave radio invented.
The flip-flop circuit invented.
The arc welder invented.
1920
• The tommy gun patented by John T Thompson.
• The Band-Aid (pronounced 'ban-'dade) invented by Earle Dickson.
1921
• Artificial life begins -- the first robot built.
• John Larson invented the lie detector.
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
• Insulin invented by Sir Frederick Grant Banting.
• The first 3-D movie (spectacles with one red and one green lens) is released.
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Garrett A. Morgan invents a traffic signal.
The television or iconoscope (cathode-ray tube) invented by Vladimir Kosma Zworykin.
John Harwood invented the self-windingwatch in 1923.
Clarence Birdseye invents frozen food.
• The dynamic loudspeaker invented by Rice and Kellogg.
• Notebooks with spiral bindings invented.
• The mechanical television a precursor to the modern television, invented by John Logie Baird.
• Robert H. Goddard invents liquid-fueled rockets.
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Eduard Haas III invents PEZ candy.
JWA Morrison invents the first quartz crystal watch.
Philo Taylor Farnsworth invents a complete electronic TV system.
Technicolor invented.
Erik Rotheim patents an aerosol can.
Warren Marrison developed the first quartz clock.
Philip Drinker invents the iron lung.
• Scottish biologist Alexander Fleming discovers penicillin.
• Bubble gum invented by Walter E. Diemer.
• Jacob Schick patented the electric shaver.
• American, Paul Galvin invents the car radio.
• Yo-Yo re-invented as an American fad.
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Scotch tape patented by 3M engineer, Richard G. Drew.
The frozen food process patented by Clarence Birdseye.
Wallace Carothers and DuPont Labs invents neoprene.
The "differential analyzer", or analog computer invented by Vannevar Bush at MIT in Boston.
Frank Whittle and Dr Hans von Ohain both invent a jet engine.
• Harold Edgerton invented stop-action photography.
• Germans Max Knott and Ernst Ruska co-invent the electron microscope.
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Polaroid photography invented by Edwin Herbert Land.
The zoom lens and the light meter invented.
Carl C. Magee invents the first parking meter.
Karl Jansky invents the radio telescope.
• Frequency modulation (FM radio) invented by Edwin Howard Armstrong.
• Stereo records invented.
• Richard M. Hollingshead builds a prototype drive-in movie theater in his driveway.
• Englishmen, Percy Shaw invents cat eyes or roads reflectors.
• Charles Darrow claims he invented the game Monopoly.
• Joseph Begun invents the first tape recorder for broadcasting - first magnetic recording.
1935
• Wallace Carothers and DuPont Labs invents nylon ( polymer 6.6.)
• The first canned beer made.
• Robert Watson-Watt patented radar.
1936
• Bell Labs invents the voice recognition machine.
• Samuel Colt patents the Colt revolver.
1937
• Chester F. Carlson invents the photocopier.
• The first jet engine is built.
1938
1939
1940
1941
1942
1943
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The ballpoint pen invented by Ladislo Biro.
Strobe lighting invented.
Roy J. Plunkett invented tetrafluoroethylene polymers or Teflon.
Nescafe or freeze-dried coffee invented.
The first working turboprop engine.
• Igor Sikorsky invents the first successful helicopter.
• The electron microscope invented.
• Dr William Reich invents the orgone accumulator.
• Peter Goldmark invents modern color television system.
• Karl Pabst invents the jeep.
• Konrad Zuse's Z3, the first computer controlled by software.
• Aerosol spray cans invented by American inventors, Lyle David Goodloe and W.N. Sullivan.
• Enrico Fermi invents the neutronic reactor.
• John Atanasoff and Clifford Berry built the first electronic digital computer.
• Max Mueller designs a turboprop engine.
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Synthetic rubber invented.
Richard James invents the slinky.
James Wright invent silly putty.
Swiss chemist, Albert Hofmann discovered the hallucinogenic properties of LSD.
Emile Gagnan and Jacques Cousteau invent the aqualung.
1944
• The kidney dialysis machine invented by Willem Kolff.
• Synthetic cortisone invented by Percy Lavon Julian.
1945
• Vannevar Bush proposes hypertext.
• The atomic bomb invented.
1946
1947
• The microwave oven invented by Percy Spencer.
• British/Hungarian scientist, Dennis Gabor, developed the theory of holography.
• Mobile phones first invented. AT&T came up with this idea way back.
• Bardeen, Brattain, and Shockley invent the transistor.
• Earl Silas Tupper patented the Tupperware seal.
1948
1949
• The Frisbee® invented by Walter Frederick Morrison and Warren Franscioni.
• Velcro ® invented by George de Mestral.
• Robert Hope-Jones invented the Wurlitzer jukebox.
• Cake mix invented.