Door-operating device
United States Patent 1694431
Inventors:
Russell, John F.
Rufty, Henry E.
Rufty, Henry E.
Publication Date:
12/11/1928
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Assignee:
Russell, John F.
Rufty, Henry E.
Rufty, Henry E.
Primary Class:
Other Classes:
49/396
International Classes:
E05F15/12