Chair Back

FIG. 1 is a first front and left side perspective view of a chair back showing my new design.

FIG. 2 is second front and left side perspective view thereof, shown separated from the broken line environmental structure for clarity of illustration;

FIG. 3 a front view thereof, shown separated from the broken line environmental structure for clarity of illustration;

FIG. 4 is an upper perspective view thereof, shown separated from the broken line environmental structure for clarity of illustration;

FIG. 5 is a left side view thereof, shown separated from the broken line environmental structure for clarity of illustration; and,

FIG. 6 is a right side view thereof, shown separated from the broken line environmental structure for clarity of illustration.

The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design and form no part of the claimed design. The broken line showings of the encircled star shape and elements extending away from the encircled star shape in the drawings illustrate portions of the chair back that form no part of the claimed design. The broken line showing of the chair seat, base and arms illustrates the environment of the claimed design and forms no part thereof.