Frame of chair backrest

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Description

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

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left end view thereof.

FIG. 5 is a right end view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Claims

The ornamental design for a frame of chair backrest, as shown and described.

Referenced Cited
U.S. Patent Documents
D573817 July 29, 2008 Su
D574645 August 12, 2008 Christensen
D580199 November 11, 2008 Su
D594257 June 16, 2009 Christensen
D596884 July 28, 2009 Wen
D648968 November 22, 2011 Piretti et al.
D652223 January 17, 2012 Fujita
D652646 January 24, 2012 Fujita
Patent History
Patent number: D667244
Type: Grant
Filed: May 20, 2011
Date of Patent: Sep 18, 2012
Inventor: Shu O Su (Tainan)
Primary Examiner: Mimosa De
Attorney: David and Raymond Patent Firm
Application Number: 29/392,369
Classifications
Current U.S. Class: D6/502