Title:
Cuing control for audio circuits
United States Patent 2511085
US Patent References:
Switching apparatus for sound reproducing systems
- - 1931035
Automatic change-over
- - 2081015
Relay system
- - 2106806
Audiometer
- - 2257263
Signal interrupting means for audiometers
- - 2310589
Switching apparatus for sound reproducing systems
- - 1931035
Automatic change-over
- - 2081015
Relay system
- - 2106806
Audiometer
- - 2257263
Signal interrupting means for audiometers
- - 2310589
Inventors:
Smith Jr., John P.
Publication Date:
06/13/1950
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Export Citation:
Assignee:
DAVEN COMPANY
Primary Class:
International Classes:
H04H7/00
US Patent References:
| 2350277 | Volume control for radio-phonographs |