Latch operated microphone switch for breathing mask
United States Patent 3347229
US Patent References:
/0535540.html
- - 0535540
Telephone head set
- - 1780178
Respiratory masks
- - 2814293
Retention for quick donning mask
- - 3234940
/0535540.html
- - 0535540
Telephone head set
- - 1780178
Respiratory masks
- - 2814293
Retention for quick donning mask
- - 3234940
Inventors:
Heitman, David L.
Publication Date:
10/17/1967
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Export Citation:
Assignee:
SIERRA ENG CO
Primary Class:
Other Classes:
379/430, 128/207.110, 128/206.270
International Classes:
A62B18/08; A62B18/00