PTO
Wrapper
PDF
|
Dossier
Espace
Google
|
|
Patent
D577521
|
Priority
Apr 23 2008
|
Filed
Apr 23 2008
|
Issued
Sep 30 2008
|
Expiry
Sep 30 2022
|
|
Assg.orig
|
|
Entity
unknown
|
12
|
10
|
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 |
8029060, |
Oct 04 2006 |
Formway Furniture Limited |
Chair |
8087727, |
Oct 04 2006 |
Formway Furniture Limited |
Chair |
8613481, |
Oct 04 2006 |
Formway Furniture Limited |
Chair |
8668265, |
Oct 04 2006 |
Formway Furniture Limited |
Chair |
8888183, |
Oct 04 2006 |
Formway Furniture Limited |
Chair |
D593337, |
Jan 12 2009 |
|
Chair |
D604969, |
Apr 09 2008 |
Formway Furniture Limited |
Chair back component |
D615784, |
Apr 09 2008 |
Formway Furniture Limited |
Chair back |
D641574, |
May 29 2010 |
|
Chair backrest |
D696055, |
May 26 2009 |
STEELCASE, INC |
Chair back |
D696545, |
May 26 2009 |
STEELCASE, INC |
Rear surface of a chair back |
D696546, |
May 26 2009 |
STEELCASE, INC |
Chair back |
Patent |
Priority |
Assignee |
Title |
D417792, |
Apr 29 1998 |
Klober GmbH |
Office chair |
D456159, |
May 25 2000 |
Steelcase Development Corporation |
Chair |
D456650, |
May 25 2000 |
Steelcase Inc |
Chair component |
D457023, |
May 25 2000 |
Steelcase Inc |
Chair component |
D471042, |
Feb 13 2002 |
HERMAN MILLER, INC |
Back for a seating structure |
D471370, |
Feb 13 2002 |
HERMAN MILLER, INC |
Task chair |
D490994, |
Oct 15 2002 |
HERMAN MILLER, INC |
Task chair |
D494792, |
Oct 15 2002 |
HERMAN MILLER, INC |
Back for a seating structure |
D506893, |
Apr 28 2004 |
|
Chair back |
D544720, |
Apr 06 2006 |
|
Chair |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a