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.

Referenced Cited
U.S. Patent Documents
D453079 January 29, 2002 Ma
D461322 August 13, 2002 Holbrook et al.
D461348 August 13, 2002 Holbrook et al.
D469265 January 28, 2003 Holbrook et al.
D469284 January 28, 2003 Holbrook et al.
D474346 May 13, 2003 Saylor et al.
D485097 January 13, 2004 Raftery
D486656 February 17, 2004 Su
D489191 May 4, 2004 Ma
D489541 May 11, 2004 Su
D493627 August 3, 2004 Ma
D495509 September 7, 2004 Breen
D510488 October 11, 2005 Su
D511418 November 15, 2005 Breen
D514831 February 14, 2006 Tsai
D514832 February 14, 2006 Tsai
Patent History
Patent number: D540579
Type: Grant
Filed: Aug 18, 2006
Date of Patent: Apr 17, 2007
Inventor: Tung-Hua Su (Kuwi Jen Hsiang, Tainan Hsien)
Primary Examiner: Mimosa De
Attorney: Banger Shia
Application Number: 29/248,519
Classifications
Current U.S. Class: D6/502; D6/366