Inventor William Gray received a patent for creating the telephone that uses coins to operate it.
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Cyrus McCormick patented the reaping machine.
Willis Carrier invented the world's first electronic air conditioner.
The world's favorite paper joiner, the stapler was patented by C. H. Gould in England.
Levi Strauss and Jacob Davis patented the first blue jeans with copper rivets.
Ephraim Morris patented the car brake for railroads.
