FIG. 1 is an upper front left perspective view of a pen showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right side elevation view thereof,
FIG. 5 is a left side elevation view thereof;
FIG. 6 is an enlarged top plan view thereof;
FIG. 7 is an enlarged bottom plan view thereof;
FIG. 8 is an upper front left perspective view of another embodiment of the pen shown in FIG. 1;
FIG. 9 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;
FIG. 10 is a front elevation view thereof;
FIG. 11 is a rear elevation view thereof;
FIG. 12 is an enlarged top plan view thereof;
FIG. 13 is an enlarged bottom plan view thereof;
FIG. 14 is a lower front right perspective view of the pen cap shown separate from the pen in FIG. 1 for convenience of illustration;
FIG. 15 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;
FIG. 16 is a front elevation view thereof;
FIG. 17 is a rear elevation view thereof;
FIG. 18 is an enlarged top plan view thereof; and,
FIG. 19 is an enlarged bottom plan view thereof.
The broken lines shown in FIGS. 1, 6, and 18 illustrate environmental subject matter and form no part of the claimed design.
The broken lines inside the cap in FIG. 19 that define the bounds of the claimed design form no part thereof.