Chair backrest
Description
The broken lines shown in the drawings are for the purpose of illustrating portions of the chair backrest and form no part of the claimed design.
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
D540578 | April 17, 2007 | Chen |
D580199 | November 11, 2008 | Su |
D596885 | July 28, 2009 | Su |
D661120 | June 5, 2012 | Su |
D687660 | August 13, 2013 | Hsuan-Chin |
D691407 | October 15, 2013 | Nakamura |
D772592 | November 29, 2016 | Su |
D778660 | February 14, 2017 | Tsai |
D917217 | April 27, 2021 | Tsai |
D917218 | April 27, 2021 | Tsai |
D935253 | November 9, 2021 | Wang |
- “Office Chair” Jun. 14, 2020, amazon.com, site visited Mar. 28, 2022 https://www.amazon.com/FelixKing-Ergonomic-Adjustable-Computer-Conference/dp/B088GMPZ3F/ref=sr_1_36?crid=2TKWQKZL5XF9W&keywords=ergonomic+office+chair+backrest&qid=1648508240&sprefix=ergonomic+office+chair+backrest%2Caps%2C255&sr=8-36 (Year: 2020).
- “Office Ergonomic Task Chair” Oct. 22, 2020, wayfair.com, site visited Mar. 28, 2022 <https://www.wayfair.com/furniture/pdp/inbox-zero-office-ergonomic-task-chair-w004140983.html> (Year: 2020).
Patent History
Patent number: D957839
Type: Grant
Filed: Apr 25, 2019
Date of Patent: Jul 19, 2022
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Kevin K Rudzinski
Assistant Examiner: Paul D Bohannon
Application Number: 29/688,870
Type: Grant
Filed: Apr 25, 2019
Date of Patent: Jul 19, 2022
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: Kevin K Rudzinski
Assistant Examiner: Paul D Bohannon
Application Number: 29/688,870
Classifications
Current U.S. Class:
D6/366