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United States Patent 1521554
Inventors:
Alma, Guenther
View Patent Images:
Download PDF 1521554
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Publication Date:
12/30/1924
Export Citation:
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Assignee:
Alma, Guenther
Primary Class:
52/63
Other Classes:
5/10.100, 52/73, 52/79.600, 52/64
International Classes:
E06B7/28
;
E06B7/00