Title:
Helmet
United States Patent 2455797
US Patent References:
/0077007.html
- - 0077007

/0631880.html
- - 0631880

Head-protection attachment for caps, hats, or other headgear
- - 1456183


Inventors:
Myers, Charles H.
Yant, William P.
Publication Date:
12/07/1948
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Assignee:
MINE SAFETY APPLIANCES CO
Primary Class:
2/414
Other Classes:
2/419, 2/418
International Classes:
A42B3/10; A42B3/04
Foreign References:
GB190723018A