Extension ladder platform

Details Extension ladder platform Extension ladder platform

2010-03-05

2010-11-16

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

Design Patent

active

D0627486

CLAIM:
The ornamental design for an extension ladder platform, as shown and described.

REFERENCES:
patent: 3111193 (1963-11-01), McKinnie
patent: 3294197 (1966-12-01), Kwiatkowski
patent: 3464518 (1969-09-01), Stelovich
patent: 4586586 (1986-05-01), Canals
patent: 5056620 (1991-10-01), Zumwalt et al.
patent: 5337857 (1994-08-01), Splat et al.
patent: 5779208 (1998-07-01), McGraw
patent: 6109392 (2000-08-01), Merrick
patent: 6729439 (2004-05-01), Zlatis et al.
patent: 6786300 (2004-09-01), Bonifacini
patent: D523156 (2006-06-01), Skaggs

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