Helmet construction
United States Patent 2371712

Inventors:
Scholl, Charles F.
Bergman, Raymond W.
Publication Date:
03/20/1945
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Assignee:
SCHOLL MFG CO INC
Primary Class:
2/419
Other Classes:
2/5, D29/104, 2/6.600
International Classes:
A42B3/14; A42B3/04