Title:
Welder's helmet
United States Patent 2433164
Inventors:
Shields, Raleigh T.
Publication Date:
12/23/1947
Export Citation:
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Assignee:
Shields, Raleigh T.
Primary Class:
2/8.1
International Classes:
A61F9/06; A61F9/04
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US Patent References:
2363461Welder's mask