Title:
Protective helmet
United States Patent 3208080
US Patent References:
/0642649.html
- - 0642649
/1268223.html
- - 1268223
Lining for safety helmets
- - 3039109
Formable bag construction for use as helmet liner or mattress
- - 3070802
Safety helmet
- - 3082427
/0642649.html
- - 0642649
/1268223.html
- - 1268223
Lining for safety helmets
- - 3039109
Formable bag construction for use as helmet liner or mattress
- - 3070802
Safety helmet
- - 3082427
Inventors:
Ernest, Hirsch Arthur
Publication Date:
09/28/1965
View Patent Images:
Export Citation:
Assignee:
Ernest, Hirsch Arthur
Primary Class:
Other Classes:
2/903
International Classes:
A42B3/00
US Patent References:
| 3107356 | Headgear |
Foreign References:
| DE1053195C | ||||
| GB539577A |