Tech History Today – Feb. 25

In 1837 – The U.S. 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.

In 1928 – Charles Jenkins Laboratories of Washington, D.C. became the first holder of a television license from the Federal Radio Commission.

In 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.