
1926 
1927 
1928 
1929 
American, Paul Galvin invents the 
car radio.
Yo-Yo re-invented as an American fad. 
1930 
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.
1931 
 
1932 
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. 
 
1933 
1934 
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. 
1937 
1938 
1939 
1940 
1941 
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. 
1942 
1943 
Synthetic rubber invented.
Swiss chemist, Albert Hofmann discovered the hallucinogenic properties of LSD. 
 
1944 
1945 
1946 
1947 
British/Hungarian scientist, Dennis Gabor, developed the theory of 
holography.
Mobile phones first invented. Although cell phones were not sold commercially until 1983, AT&T came up with the idea way back.
Bardeen, Brattain, and Shockley invent the 
transistor.
Earl Silas Tupper patented the 
Tupperware seal. 
1948 
1949 
Cake mix invented. 
1950 
The first 
credit card (Diners) invented by Ralph Schneider.