Method of exciting piezo-electric crystals and apparatus therefor
United States Patent 1796650

Inventors:
Harrison, Jamison R.
Publication Date:
03/17/1931
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Assignee:
RCA CORP
Primary Class:
310/366
Other Classes:
310/318, 333/187, 310/368
International Classes:
H03H9/19; H03H9/00