Office chair

FIG. 1 is a perspective view of an office chair according to one embodiment of the new design;

FIG. 2 is a right side view, the left side being a mirror image thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view of an office chair according to a second embodiment of the new design;

FIG. 8 is a right side view, the left side being a mirror image thereof;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a top view thereof; and,

FIG. 12 is a bottom view thereof.

FIGS. 1-12 show portions of the office chair in broken lines. The portions shown in broken lines form no part of the claimed design.