Title:
Lifting mechanism
Document Type and Number:
United States Patent 1888612
Inventors:
Anderson, David P.
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Publication Date:
11/22/1932
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Assignee:
Anderson, David P.
Primary Class:
Other Classes:
414/684.300, 251/294, 49/445, 49/360, 187/264, 254/284, 187/260
International Classes:
F23M7/00