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Title:
Hatch construction
United States Patent 2239033
Inventors:
Cartmill, Loyd E.
Publication Date:
04/22/1941
View Patent Images:
Download PDF 2239033
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Assignee:
Cartmill, Loyd E.
Primary Class:
52/19
Other Classes:
220/215
International Classes:
B61D17/16
;
B61D17/04