Title:
Respiratory mouthpiece
United States Patent 2857911
US Patent References:
/1050620.html
- - 1050620

Respirator
- - 2166164

Oxygen-delivering parachute escape outfit
- - 2360193

Respiratory facial mask
- - 2540567


Inventors:
Ray, Bennett Vivian
Publication Date:
10/28/1958
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Assignee:
Bennett, Respiration Products I.
Primary Class:
128/206.240
Other Classes:
128/207.140
International Classes:
A61B5/097; A61M16/04; A62B9/06; A61M16/01; A61B5/08; A62B9/00