Title:
Protective face mask
United States Patent 3310812


Inventors:
Gaisser, Gladys F.
Application Number:
US40102064A
Publication Date:
03/28/1967
Filing Date:
10/02/1964
Assignee:
Gaisser, Gladys F.
Primary Class:
2/9
Other Classes:
2/174
International Classes:
A61F9/02
View Patent Images:
US Patent References:
3241155Face shield1966-03-22
3137006Facial mask1964-06-16
2021593Mask1935-11-19
0450515N/A1891-04-14
Foreign References:
AU136435B