Chair backrest

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Description

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.

Claims

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

Referenced Cited
U.S. Patent Documents
D453079 January 29, 2002 Ma
D456626 May 7, 2002 Su
D471042 March 4, 2003 Schmitz et al.
D485097 January 13, 2004 Raftery
D486657 February 17, 2004 Su
D494768 August 24, 2004 Su
D494792 August 24, 2004 Schmitz et al.
D495509 September 7, 2004 Breen
D511418 November 15, 2005 Breen
D512843 December 20, 2005 Breen
D514831 February 14, 2006 Tsai
20020190564 December 19, 2002 Coffield et al.
20030001425 January 2, 2003 Koepke et al.
Patent History
Patent number: D540580
Type: Grant
Filed: Dec 31, 2005
Date of Patent: Apr 17, 2007
Inventor: Tung-Hua Su (Kuwi Jen Hsiang, Tainan Hsien)
Primary Examiner: Mimosa De
Attorney: Banger Shia
Application Number: 29/251,017
Classifications
Current U.S. Class: D6/502; D6/366