The ornamental design for a holepatcher for use on wallboard, as shown and described.
FIG. 1 is a front, top and side perspective view of the hole patcher for
use on wallboard showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof; and,
FIG. 4 is a bottom plan view thereof, the top plan view, the left and right
side elevation views all being a mirror image with the exception of the
orientation of the bolt as viewed from the sides.