Thomas Edison filed his patent for the Optical Phonograph.
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Robert Goddard was granted a patent for the rocket-powered aircraft.
Inventor John Hyatt registered cellulose nitrate (celluloid) as a trademark.
George Hancock, who invented softball, played the first match in Chicago.
Thomas Edison spoke on the radio for the first time at a dinner for the National Electric Light Association.
George Westinghouse Jr. patented steam power brake devices in the US.
