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Title:
Hoists
United States Patent 2757756
Inventors:
Frank, Warry Reginald
Publication Date:
08/07/1956
Assignee:
R F WARRY LTD
Primary Class:
Other Classes:
D08/34
International Classes:
B66B9/16; E04G1/20
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US Patent References:
Foreign References:
GB676191A