Title:
Surgical mask
United States Patent 3315672


Inventors:
Cunningham, Frank W.
Luck, James V.
Application Number:
US38162264A
Publication Date:
04/25/1967
Filing Date:
07/10/1964
Assignee:
Cunningham, Frank W.
Luck, James V.
Primary Class:
Other Classes:
D24/110.4
International Classes:
A41D13/11; A62B18/00
View Patent Images:
US Patent References:
3130722Respiratory mask1964-04-28
3058463Surgical mask1962-10-16
2858828Respirator1958-11-04
1348819Gas-mask1920-08-03
1221446N/A1917-04-03
1101898N/A1914-06-30
0437915N/A1890-10-07
Foreign References:
FR28334E1925-02-16