Universal aviators oxygen breathing mask
United States Patent 2837090
US Patent References:
Oxygen mask
- - 2444417

Respiratory facial mask
- - 2540567


Inventors:
Aaron, Bloom
Michel, Edward L.
Publication Date:
06/03/1958
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Assignee:
Aaron, Bloom
Michel, Edward L.
Primary Class:
128/206.240
Other Classes:
128/207.110
International Classes:
A62B18/02; A62B18/00