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Patent
D610709
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Priority
Apr 07 2009
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Filed
Apr 07 2009
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Issued
Feb 23 2010
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Expiry
Feb 23 2024
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Assg.orig
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Entity
unknown
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5
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7
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n/a
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The ornamental design for a ladder extension, as shown and described.
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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.
Lamb, Lee A.
Patent |
Priority |
Assignee |
Title |
9038776, |
Apr 03 2009 |
Lock N Climb, LLC |
Collapsible safe ladder |
D721825, |
Sep 09 2013 |
Lock N Climb, LLC |
Ladder stabilizer |
D733931, |
Sep 09 2013 |
Lock N Climb, LLC |
Ladder towing apparatus |
D734500, |
Sep 09 2013 |
Lock N Climb, LLC |
Ladder towing apparatus |
D745191, |
May 27 2014 |
Lock N Climb, LLC |
Ladder |
Patent |
Priority |
Assignee |
Title |
3866714, |
|
|
|
4284171, |
Feb 12 1979 |
|
Convertible ladder |
4926964, |
Sep 05 1989 |
|
Step/extension ladder |
5454446, |
Mar 24 1994 |
|
Freestanding extension ladder |
6698550, |
Apr 04 2002 |
|
Adjustable step ladder |
6702066, |
Jun 11 2001 |
|
Ladder leveling device |
D364930, |
Dec 23 1994 |
|
Ladder extension |
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