Ladder extension

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Description

FIG. 1 is a front elevation view of a ladder extension showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a right side elevation view thereof, the opposite side being a mirror image of the shown;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an isometric view thereof.

The broken lines shown in FIG. 6 are for illustrative purposes only and form no part of the claimed design.

Claims

The ornamental design for a ladder extension, as shown and described.

Referenced Cited
U.S. Patent Documents
3866714 February 1975 Waldron
4284171 August 18, 1981 Owen
4926964 May 22, 1990 Herrin
5454446 October 3, 1995 Zelikovitz
D364930 December 5, 1995 Burge et al.
6698550 March 2, 2004 Crain
6702066 March 9, 2004 Eaton
Patent History
Patent number: D610709
Type: Grant
Filed: Apr 7, 2009
Date of Patent: Feb 23, 2010
Inventor: Lee A. Lamb (Eugene, OR)
Primary Examiner: Doris Clark
Attorney: Crossley Patent Law
Application Number: 29/335,034
Classifications