Radio equipment with chest mounted speaker-microphone assembly
United States Patent 3370236
US Patent References:
Portable two-way wave-signal space-communication set
- - 2439411
Portable transmitter-receiver apparatus
- - 2541042
Portable electroacoustical apparatus
- - 2571514
Method and system for producing sound motion pictures
- - 2685224
Portable transmitter apparatus with selective, diverse antenna means
- - 3087117
Portable two-way wave-signal space-communication set
- - 2439411
Portable transmitter-receiver apparatus
- - 2541042
Portable electroacoustical apparatus
- - 2571514
Method and system for producing sound motion pictures
- - 2685224
Portable transmitter apparatus with selective, diverse antenna means
- - 3087117
Inventors:
Walker, Robert H.
Publication Date:
02/20/1968
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Export Citation:
Assignee:
MOTOROLA INC
Primary Class:
Other Classes:
381/91, 455/351, 224/674, 455/100, 224/930
International Classes:
H04B1/38
US Patent References:
| 3114105 | Shoulder mounted radio speaker and microphone |