Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
U.S. Patent Documents
D445580 | July 31, 2001 | Pennington |
D793143 | August 1, 2017 | Tsai |
D809842 | February 13, 2018 | Su |
D823626 | July 24, 2018 | Chen |
D837553 | January 8, 2019 | Meda |
D839035 | January 29, 2019 | Tsai |
D888450 | June 30, 2020 | Zhou |
D909084 | February 2, 2021 | Dai |
D913004 | March 16, 2021 | Chen |
D920696 | June 1, 2021 | Su |
D921410 | June 8, 2021 | Deevers |
20020036420 | March 28, 2002 | Footitt |
20080315661 | December 25, 2008 | Lin |
Patent History
Patent number: D929784
Type: Grant
Filed: May 20, 2020
Date of Patent: Sep 7, 2021
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: R. Johnson
Application Number: 29/735,309
Type: Grant
Filed: May 20, 2020
Date of Patent: Sep 7, 2021
Inventor: Tung-Hua Su (Tainan)
Primary Examiner: R. Johnson
Application Number: 29/735,309
Classifications
Current U.S. Class:
D6/716.4