Original 1930s Monopoly game that was invented by Charles Darrow.
Carlton Cole Magee invented the first parking meter in 1932 in response to the growing problem of parking congestion. The first parking meters were used in Oklahoma City.
1934 - the invention of George Nissen and Larry Griswold's modern trampoline.
Meet the Man Who Invented the Earthquake Richter Scale: The Richter magnitude scale was developed in 1935 by Charles Richter.
1936 - The first tampax tampon
On October 22, 1938, Chester Carlson invented the photocopier! He tried to sell it to IBM, but they saw no use for something that simply made copies. #hindsight #inventions #xerox
U.S. patent drawing for the first successful ballpoint pen, invented by László Biró.