Chair back frame
Description
Claims
The ornamental design for a chair back frame, as shown and described.
Referenced Cited
U.S. Patent Documents
D558994 | January 8, 2008 | Machael |
D579695 | November 4, 2008 | Wu |
D580198 | November 11, 2008 | Wu |
8251448 | August 28, 2012 | Machael |
D687660 | August 13, 2013 | Hsuan-Chin |
D714069 | September 30, 2014 | Cvek |
D714070 | September 30, 2014 | Cvek |
D745300 | December 15, 2015 | Cvek |
D782239 | March 28, 2017 | Tsai |
D793143 | August 1, 2017 | Tsai |
Patent History
Patent number: D839035
Type: Grant
Filed: Nov 27, 2017
Date of Patent: Jan 29, 2019
Inventor: Hsuan-Chin Tsai (Chai-Yi Hsien)
Primary Examiner: Mimosa De
Application Number: 29/627,358
Type: Grant
Filed: Nov 27, 2017
Date of Patent: Jan 29, 2019
Inventor: Hsuan-Chin Tsai (Chai-Yi Hsien)
Primary Examiner: Mimosa De
Application Number: 29/627,358
Classifications
Current U.S. Class:
D6/716.4;
D6/366