Pen

FIG. 1 is a perspective view 1 of a pen showing my new design;

FIG. 2 is a perspective view 2 thereof;

FIG. 3 is a front elevational view thereof; the rear elevational view is the same as the front elevational view;

FIG. 4 is a left side elevational view thereof; the right side elevational view is the same as the left side elevational view;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof showing the state where the core guard comes out.

The broken lines depict portions of the pen that form no part of the claim.