US D311550 S
FIG. 1 is a perspective view of a marking pen showing my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a left side elevational view, the right side being a mirror image thereof;
FIG. 4 is a rear elevational view;
FIG. 5 is a top plan view; and
FIG. 6 is a bottom plan view thereof.