Patent For The Electric Guitar
I'll bet you didn't realize that rock and roll owes the creation of the electric guitar to Hawaiian music!
Mar 17, 2006, 5:13pm
Patent for the Cotton Gin
Designed to separate cotton fiber from seed, Whitney's cotton gin, for which he received a patent on March 14, 1794, introduced a new, profitable technology to agricultural production in America.
Mar 17, 2006, 1:35pm
Patent for the Electric Lamp
Before the invention of the electric lightbulb, homes were lit by candle, kerosene-oil lamp, or gaslight. All flickered, were fire hazards, and emitted smoke and heat.
Mar 17, 2006, 1:27pm
Patent for the Telephone
Bell sought something revolutionary: to transmit not only the sound of the human voice, but audible words. With the telephone, Bell wrote in 1878, "It is possible to connect every man's house, office or factory with a central station, so as to give him direct communication with his neighbors."
Mar 17, 2006, 1:15pm
Patent for the Electric Dynamo
Tesla patented a device to induce electrical current in a piece of iron (a rotor) spinning between two electrified coils of wire. This rotating magnetic field device generates AC current when it is made to rotate by using some form mechanical energy, like steam or hydropower.
Mar 17, 2006, 11:54am