The ornamental design for a paperclip, as shown and described.
FIG. 1 is a front elevational view of a paper clip showing my new design;
FIG. 2 is an side elevational view, all other sides being identical;
FIG. 3 is a front elevational view of a second embodiment of my new design,
the rear view being a mirror image thereof; and,
FIG. 4 is a rear elevational view of FIG. 1 drawn to a reduced scale.
The fragmentary sheets of paper depicted by means of broken lines in FIG. 1
are shown for illustrative purposes only and form no part of the claimed
design.