Title:
Microphone construction
United States Patent 3007013
US Patent References:
/1096677.html
- - 1096677

Telephone-transmitter button
- - 1486132

/1592059.html
- - 1592059

Electrical apparatus
- - 1865210

Telephone transmitter
- - 2431022


Inventors:
Paull, Charles F.
Chorpenning, Robert H.
Publication Date:
10/31/1961
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Assignee:
ASTATIC CORP
Primary Class:
381/180
Other Classes:
381/91
International Classes:
H04R1/22
US Patent References:
2435920Balanced granular microphone
2819351Microphone
2905771Piezoresistive semiconductor microphone
Foreign References:
GB440330A