Office chair base

Description

FIG. 1 is a first perspective view of an office chair base showing my new design.

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a rear view of FIG. 1;

FIG. 5 is a left side view of FIG. 1;

FIG. 6 is a right side view of FIG. 1;

FIG. 7 is a top plan view of FIG. 1; and,

FIG. 8 is a bottom plan view of FIG. 1.

The broken lines in the drawings depict portions of the office chair base that form no part of the claimed design.

Claims

The ornamental design for an office chair base, as shown and described.