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United States Patent 1794109
Inventors:
Edna, Eckert
Publication Date:
02/24/1931
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Download PDF 1794109
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Assignee:
Edna, Eckert
Primary Class:
362/132
Other Classes:
428/3, 362/124, 312/33
International Classes:
A47G33/02
;
A47G33/00