1837 – The US Patent Office approved Thomas Davenport’s application for a patent on an “Improvement in Propelling Machinery by Magnetism and Electro-Magnetism.” We’d call it an electric motor.
1928 – Charles Jenkins Laboratories of Washington, DC became the first holder of a television license from the Federal Radio Commission.
1930 – A US patent for a photographing apparatus was issued to George Lewis McCarthy, who called it a Checkograph. It was the first bank check photographing device.
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