Patent
   D686013
Priority
Dec 23 2011
Filed
Dec 23 2011
Issued
Jul 16 2013
Expiry
Jul 16 2027
Assg.orig
Entity
unknown
0
11
n/a
The ornamental design for a chair back frame, as shown and described.

FIG. 1 is a perspective view of a chair back frame, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a right side thereof mounted on a chair.

Wherein the broken lines are shown for illustrative purposes only and form no part of the claimed design.

Hsiao, Yun-Cheng

Patent Priority Assignee Title
Patent Priority Assignee Title
6945601, Dec 23 2003 Multi-stage backrest assembly
7303232, Dec 07 2006 Backrest adjusting device for office chairs
D507910, Jun 09 2004 BOCK 1 GmbH & Co. KG Headrest
D510671, Nov 25 2003 Backrest frame of a chair
D580198, Mar 17 2008 Chair back
D601830, Oct 30 2008 True Seating Concepts, LLC Frame for a chair back
D641572, Feb 01 2010 FUH Shyan Co., Ltd. Chair back frame
D645683, Jan 18 2011 Seatback frame
D645684, Jan 18 2011 Combined seatback frame
D661916, Jan 18 2011 Office chair
D673399, Aug 26 2011 Seatback frame
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 23 2011CHIA CHI YA ENTERPRISE CO., LTD.(assignment on the face of the patent)
Dec 23 2011HSIAO, YUN-CHENGCHIA CHI YA ENTERPRISE CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0274390929 pdf
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