Claims (1)
Claim 1 (Independent)
I claim the ornamental design for a chair support structure, as shown and described.
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FIG. 1 is a front perspective view of a chair support structure embodying the present invention;
FIG. 2 is a front view of the chair support structure of FIG. 1 ;
FIG. 3 is a rear view of the chair support structure of FIG. 1 ;
FIG. 4 is a right side view of the chair support structure of FIG. 1 ;
FIG. 5 is a left side view of the chair support structure of FIG. 1 ;
FIG. 6 is a top view of the chair support structure of FIG. 1 ; and,
FIG. 7 is a bottom view of the chair support structure of FIG. 1 .
The broken lines shown herein are for illustrative purposes only and form no part of the claimed design.