Step ladder wheel attachment

Details Step ladder wheel attachment Step ladder wheel attachment

2002-05-21

2003-03-04

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

Design Patent

active

D0471288

CLAIM:
The ornamental design for a step ladder wheel attachment, as shown and described.

REFERENCES:
patent: D274945 (1984-07-01), Fitch
patent: 4485893 (1984-12-01), Fontan
patent: D431081 (2000-09-01), Johansson et al.

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