Patent
   D450209
Priority
Apr 27 1999
Filed
Apr 27 1999
Issued
Nov 13 2001
Expiry
Nov 13 2015
Assg.orig
Entity
unknown
1
7
n/a
The ornamental design for a backrest support frame for a chair, as shown and described.

FIG. 1 is a perspective view of backrest support frame for a chair showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Cao, Zi-Wen

Patent Priority Assignee Title
D547978, Mar 24 2006 HNI Corporation Chair back upright
Patent Priority Assignee Title
2577050,
2599301,
2784769,
2847062,
3059971,
3720442,
5711576, Jan 20 1995 HNI TECHNOLOGIES INC Back height adjustment mechanism for a chair
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