Patent Publication Number: US-D653886-S

Title: Chair back

Description:
FIG. 1  is a front perspective view of a design for a chair back; 
         FIG. 2  is a front elevational view of the design shown in  FIG. 1 ; 
         FIG. 3  is a bottom elevational view of the design shown in  FIG. 1 ; 
         FIG. 4  is a side elevational view of the design shown in  FIG. 1  in which the opposite side is a mirror image; 
         FIG. 5  is a top elevational view of the design shown in  FIG. 1 ; and, 
         FIG. 6  is a perspective view of a chair incorporating the chair back of the present design in which the chair components shown in broken lines are environmental structure for illustrative purposes only and form no part of the claimed design.