Double-deck portable scaffold
United States Patent 2730411
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Inventors:
Krane, Frank J.
Publication Date:
01/10/1956
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Assignee:
Krane, Frank J.
Primary Class:
182/130
Other Classes:
182/38
International Classes:
E04G3/20
US Patent References:
1209839
1402156Convertible window-cleaner's stand
1458744Window-washer platform
1510931Window-cleaning support
2080015Safety device
2194978Portable window cleaning scaffold