Dome 1941
Robert B. Dome, Bridgeport, Connecticut "Amplifying System". Filed: January 28, 1941 U.S. Patent 2,302,493 Granted: November 17, 1942

Dome 1941

 

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Filed: January 28, 1941
U.S. Patent 2,302,493
Granted: November 17, 1942

Robert B. Dome, Bridgeport, Connecticut
"Amplifying System".
 Referenced by Walker in U.S. Pat. 3,773,984.