Telescoping ladder leg extender having mated toothed...

Details Telescoping ladder leg extender having mated toothed... Telescoping ladder leg extender having mated toothed...

2002-12-10

2003-09-02

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

Design Patent

active

D0479339

CLAIM:
We claim the ornamental design for a telescoping ladder leg extender having mated toothed elements and self-leveling foot for uneven terrain, as shown and described.

REFERENCES:
patent: 1246709 (1917-11-01), Brown
patent: 1329740 (1920-02-01), Barron
patent: 2147052 (1939-02-01), Noone
patent: 3233702 (1966-02-01), Feltrop
patent: 3554321 (1971-01-01), Stedman
patent: 4249638 (1981-02-01), Fernandez
patent: 4457397 (1984-07-01), Scala
patent: 4683980 (1987-08-01), Vayko
patent: 4807720 (1989-02-01), Kim
patent: 5044468 (1991-09-01), Worthington, Jr.
patent: D380277 (1997-06-01), Bonn et al.
patent: D419243 (2000-01-01), Goch

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