Title:
Design of electro-mechanical transducer elements
United States Patent 2900536
US Patent References:
/RE20213.html
- - RE20213

Oscillating crystal
- - 1925577

Ceramic transducer element
- - 2640165


Inventors:
Palo, Maurice M.
Publication Date:
08/18/1959
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Assignee:
ASTATIC CORP
Primary Class:
310/330
Other Classes:
310/366, 310/367, 310/358, 310/359
International Classes:
H04R17/00
Foreign References:
FR847744A