We claim the ornamental design for a column protector, as shown and described.
FIG. 1 is a front perspective view of a column protector of the present invention;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is first side view thereof;
FIG. 6 is second side view thereof;
FIG. 7 is a top view thereof, the bottom view is a mirror image thereof;
FIG. 8 is a magnified front perspective view thereof;
FIG. 9 is a magnified rear perspective view thereof; and,
FIG. 10 is a magnified rear perspective view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. Any broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.