Chair backrest
Description
Claims
The ornamental design for a chair backrest, as shown and described.
Referenced Cited
U.S. Patent Documents
6196632 | March 6, 2001 | De Lucchi |
D513134 | December 27, 2005 | Asano |
D546085 | July 10, 2007 | Ritch |
D548475 | August 14, 2007 | Ritch |
D586577 | February 17, 2009 | Koh |
D592876 | May 26, 2009 | Smith |
D600052 | September 15, 2009 | Smith |
D600936 | September 29, 2009 | Koh |
D605421 | December 8, 2009 | Baldanzi |
7775600 | August 17, 2010 | Battey |
D668883 | October 16, 2012 | Koh |
D680770 | April 30, 2013 | Hori |
D686832 | July 30, 2013 | Hori |
D703459 | April 29, 2014 | Nakamura |
D758088 | June 7, 2016 | Hurford |
D798626 | October 3, 2017 | Cohen |
D801742 | November 7, 2017 | Nakamura |
D821794 | July 3, 2018 | Hurford |
Patent History
Classifications
Current U.S. Class:
D6/716.4;
D6/376;
D6/380