Title:
Portable step attachment for ladders
United States Patent 3115214
Inventors:
Roberts, Ralph R.
Publication Date:
12/24/1963
Export Citation:
Click for automatic bibliography generation
Assignee:
Roberts, Ralph R.
Primary Class:
182/228.3
Other Classes:
182/120, D25/69
International Classes:
E06C7/16; E06C7/00
View Patent Images:
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US Patent References:
3020972Combination utility cart and extension ladder
2430642Safety trestle
2381569Rodent guard
2335046Portable and adjustable knockdown scaffold
1820315Step attachment for ladders
1474462Portable scaffold
1013751N/A
0897929N/A
0886737N/A
Foreign References:
BE516360A
GB757497A