Patent
   D799063
Priority
May 20 2016
Filed
May 20 2016
Issued
Oct 03 2017
Expiry
Oct 03 2032
Assg.orig
Entity
unknown
4
7
n/a
The ornamental design for an extension ladder, as shown and described.

FIG. 1 is a perspective view of an extension ladder showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is left side elevation view thereof;

FIG. 5 is right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Yin, Yelin

Patent Priority Assignee Title
D872880, Jun 15 2018 Ningbo Xingfu Tools Co., Ltd. Telescopic ladder
D885608, Mar 21 2019 Ningbo Xingfu Tools Co., Ltd. Connecting sleeve for extension ladder
D904641, Apr 21 2018 Adjustable ladder
D975317, Sep 23 2022 Yongkang EMJ Industrial & Trade Co., Ltd Ladder
Patent Priority Assignee Title
5738186, Mar 01 1994 Foxdale Developments Limited Extensible ladder
20040195043,
20100270106,
D365402, Jun 25 1994 Foxdale Developments Limited Extensible ladder
D677799, Dec 29 2010 Telesteps AB Ladder
D692163, Dec 29 2010 Telesteps AB Ladder
D777351, Nov 05 2014 Telesteps AB Ladder
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Apr 25 2016YIN, YELINEASYTEC CORPORATIONASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0386580597 pdf
May 20 2016EASYTEC CORPORATION(assignment on the face of the patent)
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