Protective helmet
United States Patent 1978994

Inventors:
Fortunato, Domenic A.
Publication Date:
10/30/1934
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Assignee:
Fortunato, Domenic A.
Primary Class:
128/201.160
Other Classes:
128/201.280, 128/201.180, 128/201.250, 128/206.290
International Classes:
A62B18/04; A62B18/00