Title:
Electrical-acoustic transducer
United States Patent 2937244
Inventors:
Ralph, Weinger
Publication Date:
05/17/1960
Export Citation:
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Assignee:
JETRONIC IND INC
Primary Class:
381/367
Other Classes:
367/132, 367/173, 381/344, 381/385
International Classes:
H04R1/44; H04R1/44
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US Patent References:
2538419Waterproof headset
2429104Signal translating apparatus
2410806Submarine signal detector
0476007N/A