Title:
Surgical mask
United States Patent 3315672
Inventors:
Cunningham, Frank W.
Luck, James V.
Publication Date:
04/25/1967
Export Citation:
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Assignee:
Cunningham, Frank W.
Luck, James V.
Primary Class:
128/863
Other Classes:
D24/110.4
International Classes:
A41D13/11; A62B18/00
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US Patent References:
3130722Respiratory mask
3058463Surgical mask
2858828Respirator
1348819Gas-mask
1221446N/A
1101898N/A
0437915N/A
Foreign References:
FR28334A