US D419478 S
FIG. 1 is a perspective view as seen from the front and upper right of a golf ball impact detector, with the broken line showing for illustrative purposes and forming no part of the claimed design;
FIG. 2 is a top view thereof;
FIG. 3 is a right side view, and the left side view thereof is a mirror image of the right side view;
FIG. 4 is a bottom view thereof;
FIG. 5 is a rear view thereof; and,
FIG. 6 is a front view, thereof.