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travin..1930'sinventions

by degahistory
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travin..1930'sinventions

Scotch tape was invented by Richard G. Drew in 1930.

In 1931, the electron microscope was invented by Germans Max Knott and Ernst Ruska.

The poloroid camera was invented in 1932 by Edwin Herbert Land.

The first prototype drive-in movie theatre was built in Richard M. Hollingshead's driveway in 1933.

Charles Darrow claims he invented the game Monopoly in 1934.

Robert Watson-Watt patented radar in 1935.

Samuel Colt patents the Colt revolver in 1936.

Chester F. Carlson invents the photocopier in 1937.

Strobe lighting invented in 1938.

Igor Sikorsky invents the first successful helicopter in 1939.

1920'S INVENTIONS


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