Depth limiting footing for a hollow frame ladder

Details Depth limiting footing for a hollow frame ladder Depth limiting footing for a hollow frame ladder

2002-08-20

2003-05-06

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

Design Patent

active

D0474284

CLAIM:
The ornamental design for a depth limiting footing for a hollow frame ladder, as shown and described.

REFERENCES:
patent: 4576250 (1986-03-01), Marish
patent: 4669576 (1987-06-01), Jones
patent: 5054579 (1991-10-01), Moson
patent: D343907 (1994-02-01), Porter
patent: 5337856 (1994-08-01), Fillers
patent: 5918699 (1999-07-01), Summers
patent: 6196353 (2001-03-01), Howard

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