Title:
Respirator
United States Patent 2505173


Inventors:
Conley, Thomas A.
Application Number:
US6718048A
Publication Date:
04/25/1950
Filing Date:
12/24/1948
Assignee:
AMERICAN OPTICAL CORP
Primary Class:
Other Classes:
128/206.17
International Classes:
A62B18/00
View Patent Images:
Other References:
None