The ornamental design for a pusherdevice for bowlingball, as shown and described.
FIG. 1 is a perspective view showing my new design for a pusher device for
bowling ball, with portions of the handle broken away for convenience of
illustration;
FIG. 2 is a front elevational view of the device;
FIG. 3 is a top plan view of the device; and
FIG. 4 is an elevational view of the left side of the device.