Schematic diagram from a radio receiver patent filed by Edward Andrews|Schematics from a radio receiver patent filed by Edward Andrews.
Patent application filed by Edward Andrews in 1933 for "an improved radio receiver particularly adapted for use in an automobile."|Patent application filed by Edward Andrews in 1933 for "an improved radio receiver particularly adapted for use in an automobile."

May 18 2015

Einstein’s Friend: The Chicago Inventor Who Helped Defeat the Nazis

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