Title:
Face mask
United States Patent 2665686
US Patent References:
/1176901.html
- - 1176901

Respirator
- - 1410928


Inventors:
Wood, Edwin E.
Hafferty, William A.
Publication Date:
01/12/1954
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Assignee:
Wood, Edwin E.
Hafferty, William A.
Primary Class:
128/206.120
Other Classes:
2/435, 128/206.240, 2/9
International Classes:
A41D13/11; A61F9/02; A62B9/00; A41D13/05
Foreign References:
GB189712452A