Title:
Supporting device
United States Patent 3011587
Inventors:
Mallog, Peter H.
Publication Date:
12/05/1961
Export Citation:
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Assignee:
Mallog, Peter H.
Primary Class:
182/150
Other Classes:
182/187
International Classes:
E04G5/04; E04G5/00
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US Patent References:
2854292Welding chair
2419145Hoist
2076810Safety cage for workmen
1918293Rungless ladder
1782701Derrick safety appliance