The ornamental design of a handpump, as shown and described.
FIG. 1 is a front elevational view of a hand pump showing a first preferred
embodiment of my new design (with the pump plunger in an opened position),
the rear being a mirror image;
FIG. 2 is a top plan view of the hand pump of FIG. 1;
FIG. 3 is a bottom plan view of the hand pump in FIG. 1;
FIG. 4 is a front elevational view of the hand pump of FIG. 1 (with the
pump plunger in a closed position), the rear being a mirror image; and,
FIG. 5 is a perspective view of the hand pump of FIG. 1 (with the pump
plunger in an opened position).