Mask for protecting respiratory tract
United States Patent 3249108
US Patent References:
/1292096.html
- - 1292096
Breathing and vocal attachment
- - 1633705
Heated nasal inhaler
- - 2410903
Air-permeable product and method of making the same
- - 2922418
/1292096.html
- - 1292096
Breathing and vocal attachment
- - 1633705
Heated nasal inhaler
- - 2410903
Air-permeable product and method of making the same
- - 2922418
Inventors:
Terman, Louis A.
Publication Date:
05/03/1966
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Export Citation:
Assignee:
Terman, Louis A.
Primary Class:
Other Classes:
219/529, 219/211, 219/527, D24/110.400, 128/206.240
International Classes:
A41D13/11; A61F7/00; A41D13/05
Foreign References:
| FR1257220A | ||||
| FR1268021A | ||||
| DE627215C |