Title:
Breathing apparatus
United States Patent 1873160


Inventors:
Sturtevant, Harold V.
Application Number:
US33852729A
Publication Date:
08/23/1932
Filing Date:
02/08/1929
Assignee:
Sturtevant, Harold V.
Primary Class:
Other Classes:
128/207.14
International Classes:
A61M16/00; A61M16/06; A61M16/04
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