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United States Patent 2106571
Inventors:
Ruby, Lipton
Publication Date:
01/25/1938
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Download PDF 2106571
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Assignee:
Ruby, Lipton
Primary Class:
2/171.500
Other Classes:
D02/881, 2/209.300, 2/171.700
International Classes:
A42B1/22
;
A42B1/00