Underwater breathing apparatus
United States Patent 2764151
US Patent References:
/0764709.html
- - 0764709
/0986907.html
- - 0986907
Oxygen controlling apparatus
- - 1926069
Gas mask
- - 2381568
Breathing apparatus
- - 2406888
/0764709.html
- - 0764709
/0986907.html
- - 0986907
Oxygen controlling apparatus
- - 1926069
Gas mask
- - 2381568
Breathing apparatus
- - 2406888
Inventors:
Cupp, Charles D.
Publication Date:
09/25/1956
View Patent Images:
Export Citation:
Assignee:
SCOTT AVIAT CORP
Primary Class:
Other Classes:
224/934, 224/628, 128/205.220, 128/204.260, 224/637
International Classes:
B63C11/22; B63C11/02
US Patent References:
| 2453475 | Resuscitation apparatus |
Foreign References:
| FR55480A | ||||
| FR976590A | ||||
| DE649034C | ||||
| FR847195A | ||||
| FR918008A |