Title:
Elevator door operating mechanism
United States Patent 1927559
Inventors:
Talen, Mauritz W.
Publication Date:
09/19/1933
Export Citation:
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Assignee:
SECURITY FIRE DOOR COMPANY
Primary Class:
49/28
Other Classes:
49/118, 49/360, 187/317, 187/320
International Classes:
B66B13/06; B66B13/02
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