Title:
Apparatus for delivering and permitting normal breathing of mixtures of gases
United States Patent 2241535

Inventors:
Boothby, Walter M.
Bulbulian, Arthur H.
Lovelace, William R.
Publication Date:
05/13/1941
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Assignee:
Boothby, Walter M.
Bulbulian, Arthur H.
Lovelace, William R.
Primary Class:
128/205.170
Other Classes:
128/207.130, D24/110.400
International Classes:
A62B18/00