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Title:
Door operating mechanism
United States Patent 2256613
Inventors:
Forman, Paris R.
Conklin, Roscoe D.
Publication Date:
09/23/1941
Export Citation:
Click for automatic bibliography generation
Assignee:
NAT PNEUMATIC CO
Primary Class:
49/340
International Classes:
E05F15/12
;
E05F15/12
View Patent Images:
Download PDF 2256613
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