Title:
Oro-nasal face mask with improved pneumatic sealing cuff
United States Patent 3330274


Inventors:
Ray, Bennett V.
Application Number:
US40412264A
Publication Date:
07/11/1967
Filing Date:
10/15/1964
Assignee:
PURITAN COMPRESSED GAS CORP
Primary Class:
Other Classes:
49/477.1, 128/207.11
International Classes:
A61M16/06; A62B18/02
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US Patent References:
Foreign References:
FR4644A