FIG. 1 is a perspective view of a pen showing my new design;
FIG. 2 is a front view thereof, a rear view being a mirror view of the front view;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a front of the cap shown without the pen for convenience, a rear view of the cap being a mirror image of the front view thereof;
FIG. 8 is a left side view thereof;
FIG. 9 is a right side view thereof;
FIG. 10 is a top view thereof;
FIG. 11 is a bottom view thereof;
FIG. 12 is a front view of the pen shown without the cap for convenience, a rear view of the pen being a mirror image of the front view thereof;
FIG. 13 is a left side view thereof;
FIG. 14 is a right side view thereof;
FIG. 15 is a top view thereof;
FIG. 16 is a bottom view thereof; and,
FIG. 17 is an exploded perspective view of the whole pen.
The broken lines in the drawing of FIG. 9 are included to show features that form no part of the claimed design.