Title:
Lifting apparatus for construction materials
United States Patent 2717801
Inventors:
Neil, William P.
Publication Date:
09/13/1955
Export Citation:
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Assignee:
Neil, William P.
Primary Class:
294/67.2
Other Classes:
52/125.6, 52/289, 212/234, 280/79.3, 294/67.1, 294/81.5, 414/10
International Classes:
E04G21/16; E04G21/16
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US Patent References:
2010054Hoisting apparatus
1251456N/A
0593969N/A