The ornamental design for a pen, as shown and described.
FIG. 1 is a perspective view of a pen showing my new design;
FIG. 2 is a front elevation view of the pen of FIG. 1;
FIG. 3 is a rear elevation view of the pen of FIG. 1;
FIG. 4 is a right side elevation view of the pen of FIG. 1;
FIG. 5 is a left side elevation view of the pen of FIG. 1;
FIG. 6 is a top plan view of the pen of FIG. 1; and,
FIG. 7 is a bottom plan view of the pen of FIG. 1.
The broken lines in the drawings showing the clip in FIGS. 1, 2, and 4-7 are included for the purpose of illustrating an unclaimed feature that forms no part of the claimed design.
CORRECTIVE ASSIGNMENT TO CORRECT THE TO REMOVE PATENT NOS 8020302, 8966771, 9375854, AND 8584367 PREVIOUSLY RECORDED ON REEL 052860 FRAME 0247 ASSIGNOR S HEREBY CONFIRMS THE CHANGE OF NAME