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United States Patent 2200080
Inventors:
Jacob, Fein
Publication Date:
05/07/1940
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Download PDF 2200080
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Assignee:
Jacob, Fein
Primary Class:
36/101
Other Classes:
36/15, 36/12
International Classes:
A43B3/24
;
A43C11/12
;
A43B3/00
;
A43C11/00