Equalizer
United States Patent 2218400

Inventors:
Bel, Clarence LE. J.
Publication Date:
10/15/1940
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Assignee:
Bel, Clarence LE. J.
Primary Class:
333/28T
Other Classes:
369/134, 381/103, 369/175
International Classes:
H03G5/06; H03G5/00