Title:
Extension ladder
Document Type and Number:
United States Patent D799063

Inventors:
Yin, Yelin (Dongguan, CN)
Application Number:
29/565450
Publication Date:
10/03/2017
Filing Date:
05/20/2016
View Patent Images:
Assignee:
Easytec Corporation (Dongguan, CN)
Primary Class:
International Classes:
(IPC1-7): 2504
Field of Search:
D25/62-69, 182/207, 182/21, 182/93, 182/195, 182/69.4, 182/104, 182/156, 182/180.1, 248/210, 248/188.5
US Patent References:
D777351LadderJanuary, 2017HolmbergD25/64
D692163LadderOctober, 2013GoranssonD25/64
D677799LadderMarch, 2013GoranssonD25/64
20100270106SECURING DEVICE FOR EXTENDING LADDEROctober, 2010Chen182/195
20040195043Collapsible ladderOctober, 2004Johansson182/195
5738186Extensible ladderApril, 1998Jones182/195
D365402Extensible ladderDecember, 1995JonesD25/64
Primary Examiner:
Johannes, Thomas
Assistant Examiner:
Colan, Gino
Attorney, Agent or Firm:
Chow, Ming
Sinorica, LLC
Claims:
CLAIM

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

Description:

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.