Title:
Mask for applying gases
United States Patent 2764152
US Patent References:
Mask
- - 2012505

Safety helmet
- - 2296338

Oxygen tent
- - 2366904

Face mask
- - 2617415


Inventors:
Osterberg, Samuel O.
Mcgovern, Charles J.
Publication Date:
09/25/1956
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Assignee:
Joel, Clark
Myer, Saklad
Primary Class:
128/201.230
Other Classes:
128/206.210, 128/205.250
International Classes:
A61M16/06