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United States Patent 2210721
Inventors:
Jones, James R.
Elofson, Carl L.
Publication Date:
08/06/1940
View Patent Images:
Download PDF 2210721
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Assignee:
ART METAL CONSTRUCTION CO
Primary Class:
312/29
Other Classes:
312/334.210, 312/194
International Classes:
A47B17/03
;
A47B17/00