Title:
Surgical face mask
United States Patent 2765788


Inventors:
Raiche, Paul A.
Application Number:
US40199254A
Publication Date:
10/09/1956
Filing Date:
01/04/1954
Assignee:
DAVOL RUBBER COMPANY
Primary Class:
Other Classes:
128/206.28
International Classes:
A61M16/06; A61M16/01
View Patent Images:
US Patent References:
1632449Mask1927-06-14
1359073Respirator1920-11-16
Foreign References:
AT86496B1921-12-10
GB240729A1925-10-08