Patent
   D764073
Priority
Feb 13 2015
Filed
Apr 28 2015
Issued
Aug 16 2016
Expiry
Aug 16 2030
Assg.orig
Entity
unknown
13
12
n/a
The ornamental design for a working ladder, as shown and described.

FIG. 1 is a left view showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a front perspective view thereof;

FIG. 7 is a rear perspective view of the working ladder with the lower step flipped over the upper step;

FIG. 8 is a front perspective view of the working ladder when folded; and,

FIG. 9 is a front perspective view of the working ladder with the handle frame raised.

Wang, Wanxing

Patent Priority Assignee Title
11441356, Jun 08 2018 LITTLE GIANT LADDER SYSTEMS, LLC Ladders, top cap for ladders and trays for ladders
D817516, Apr 05 2017 LOUISVILLE LADDER INC. End cap for a ladder
D820472, Sep 21 2016 Step stool
D888994, Mar 24 2020 JINHUA SHUNHE HOUSEHOLD PRODUCTS CO., LTD Ladder
D930292, Aug 25 2019 Litter box stand
D935054, Oct 19 2018 LITTLE GIANT LADDER SYSTEMS, LLC Ladder
D943772, Oct 19 2018 LITTLE GIANT LADDER SYSTEMS, LLC Flip-up ladder
D944417, Feb 08 2019 LITTLE GIANT LADDER SYSTEMS, LLC Top cap for a ladder
D946176, Feb 08 2019 LITTLE GIANT LADDER SYSTEMS, LLC Ladder accessory
D966557, Oct 19 2018 LITTLE GIANT LADDER SYSTEMS, LLC Ladder
D967460, Feb 09 2021 Formosa Saint Jose Corp. Multi function tire climber step
D968107, May 22 2020 POLDER PRODUCTS, LLC Step stool
D969347, Oct 19 2018 LITTLE GIANT LADDER SYSTEMS, LLC Flip-up ladder
Patent Priority Assignee Title
4276955, May 30 1978 TEKRON LICENSING B V Multiple-purpose work unit
5181583, Nov 18 1991 Ladder-like stilts for ceiling work
5915498, Oct 13 1994 Ladder with nesting lateral support braces
6779632, Apr 26 1999 Adjustable leveling stepladder
20030057019,
20040231920,
20120073903,
20140332316,
D523155, Feb 03 2005 Foldable step ladder
D562991, Nov 30 2006 DOREL HOME FURNISHINGS, INC Step stool
D565745, Jun 09 2006 DOREL HOME FURNISHINGS, INC Step stool
D706455, Nov 28 2012 Ladder
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 21 2015WANG, WANXINGNINGBO XINGFU TOOLS CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0355190391 pdf
Apr 28 2015Ningbo Xingfu Tools Co., Ltd.(assignment on the face of the patent)
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule