Title:
Piezoelectric device
United States Patent 2403692

Inventors:
Tibbetts, George C.
Publication Date:
07/09/1946
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Assignee:
Tibbetts, George C.
Primary Class:
310/328
Other Classes:
310/344, 381/173, 310/326, 29/25.350
International Classes:
G10K9/122; H01L41/09; H04R17/00; G10K9/00