|
PTO
Wrapper
PDF
|
|
Dossier
Espace
Google
|
|
|
|
Patent
D577519
|
|
Priority
Oct 18 2007
|
|
Filed
Oct 18 2007
|
|
Issued
Sep 30 2008
|
|
Expiry
Sep 30 2022
|
|
|
|
Assg.orig
|
|
|
|
Entity
unknown
|
|
13
|
|
6
|
|
n/a
|
|
|
|
The ornamental design for a chair backrest, as shown and described.
|
FIG. 1 is a perspective view of a chair backrest showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Su, Tung-Hua
| Patent |
Priority |
Assignee |
Title |
| 10264889, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| 10842281, |
Sep 20 2012 |
Steelcase Inc. |
Control assembly for chair |
| 11229294, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| 11304528, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| 11464341, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| 8998339, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| 9408467, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| 9826839, |
Sep 20 2012 |
Steelcase Inc. |
Chair assembly with upholstery covering |
| D596430, |
Mar 19 2009 |
|
Chair backrest |
| D596885, |
May 05 2009 |
|
Chair backrest |
| D600477, |
May 18 2009 |
|
Chair backrest |
| D604071, |
Jul 30 2009 |
|
Chair backrest |
| D660621, |
Nov 04 2011 |
|
Chair backrest |
| Patent |
Priority |
Assignee |
Title |
| D540081, |
Aug 18 2006 |
|
Chair backrest |
| D540579, |
Aug 18 2006 |
|
Chair backrest |
| D540580, |
Dec 31 2005 |
|
Chair backrest |
| D544735, |
Nov 23 2006 |
|
Chair backrest |
| D553886, |
Mar 25 2007 |
|
Chair backrest |
| D557028, |
Jun 16 2007 |
|
Chair |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a