The ornamental design for a rearcover for electronicdevice, as shown and described.
FIG. 1 is a front perspective view of a rear cover for electronic device showing our new design;
FIG. 2 is a front view of the rear cover for electronic device of FIG. 1;
FIG. 3 is a rear view of the rear cover for electronic device of FIG. 1;
FIG. 4 is a left-side view of the rear cover for electronic device of FIG. 1;
FIG. 5 is a right-side view of the rear cover for electronic device of FIG. 1;
FIG. 6 is a top plan view of the rear cover for electronic device of FIG. 1; and,
FIG. 7 is a bottom plan view of the rear cover for electronic device of FIG. 1.
The dash-dot-dash broken lines represent the boundaries of the claim design and form no part thereof. The dash-dash broken lines illustrate portions of the rear cover for electronic device which form no part of the claimed design.