Title:
Breathing apparatus
Document Type and Number:
United States Patent 1839980

Inventors:
Luchs, Friedrich M.
Koehler, Frederick W.
Publication Date:
01/05/1932
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Referenced by:
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Assignee:
AMERICAN ATMOS CORP
Primary Class:
128/204.280
Other Classes:
137/505.470
International Classes:
A62B9/02; A62B9/00




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