Beat oscillator
United States Patent 2281709

Inventors:
Elmer, Olson
Publication Date:
05/05/1942
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Assignee:
Elmer, Olson
Primary Class:
331/64
Other Classes:
455/226.100, 334/31, 331/168, 331/74
International Classes:
H03B5/10; H03B5/08