The ornamental design for a ballretrievingdevice, as shown and described.
FIG. 1 is an upended top, side and rear perspective view showing our new design for the ball retrieving device together with balls and a handle in broken lines.
FIG. 2 is a front, top and side perspective view rotated 90° clockwise from FIG. 1 and shown without the ball;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a left side elevational view thereof, the right side being a mirror image thereof; and,
FIG. 8 is a perspective view similar to FIG. 2 but showing the design in association with an alternate handle.
The broken lines showing the associated handle and balls form no part of the claimed design.