ADJUSTABLE HEADBAND
United States Patent 3500474
US Patent References:
Protective device
- - 2461604

Headgear
- - 2461605

Headgear suspension for welding helment
- - 3079609


Inventors:
Austin, Harry W.
Publication Date:
03/17/1970
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Assignee:
MINE SAFETY APPLIANCES CO
Primary Class:
2/418
International Classes:
A42B3/14; A42B3/04; A42B1/22




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