Title:
Piezoelectric vibrator
United States Patent 2427348

Inventors:
Bond, Walter L.
Mason, Warren P.
Publication Date:
09/16/1947
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Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
367/157
Other Classes:
99/DIG.012, 333/151, 310/326, 451/165
International Classes:
B06B1/06; G01S1/72; G01S1/00
US Patent References:
2263902Delay device for use in transmission of oscillations
2283285Massage
2207656Process of decreasing reflection of light from surfaces, and articles so produced
1677945Method and apparatus for sound transmission
2384465
Foreign References:
GB174355A
GB466212A