Sound generator
United States Patent 2901997
US Patent References:
/1292439.html
- - 1292439

Submarine signaling device
- - 1496746

Submarine sound producer
- - 1611740

Signaling apparatus
- - 2397844


Inventors:
Brooks, Arthur H.
Publication Date:
09/01/1959
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Assignee:
Brooks, Arthur H.
Primary Class:
116/27
Other Classes:
367/1, 116/137R, 102/418
International Classes:
G01S1/72; G01S1/00