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RCA patent - Transistor tone control feedback circuit 1956
https://stompboxes.co.uk/forum/viewtopic.php?t=7653
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RCA patent - Transistor tone control feedback circuit 1956
Posted:
Thu Aug 26, 2010 12:57 am
by
Bert Ohlsson
http://www.freepatentsonline.com/2994040.pdf