Harry 1943
William R. Harry, Summit, New Jersey "Electroacoustic Transducer". Filed: June 24, 1943 U.S. Patent 2,387,845 Granted: October 30, 1945

Harry 1943

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Filed: June 24, 1943
U.S. Patent 2,387,845
Granted: October 30, 1945

William R. Harry, Summit, New Jersey
"Electroacoustic Transducer".

Referenced by Walker U.S. Pat. 3,773,984.