Title:
Air-purifying device
United States Patent 1931989


Inventors:
Jenness, Leslie G.
Application Number:
US53971931A
Publication Date:
10/24/1933
Filing Date:
05/25/1931
Assignee:
DAVIS EMERGENCY EQUIPMENT COMP
Primary Class:
Other Classes:
55/486, 55/DIG.33, 96/118, 210/DIG.17
International Classes:
A62B19/00
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