Ladder
United States Patent 2485413
US Patent References:
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Inventors:
Ross, Allen R.
Publication Date:
10/18/1949
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Assignee:
Ross, Allen R.
Primary Class:
182/214
Other Classes:
182/201
International Classes:
B60R3/00; E06C7/48; E06C7/00
US Patent References:
1438411Orchard ladder
1508392Ladder bracket
1576695Ladder-bracing attachment
1590064Safety device for ladders
2187633Boat ladder
2249304Ladder attachment
2378678Portable step for vehicle repair mechanics