Case for electronic device

FIG. 1 is a front isometric view of a case for electronic device showing our new design;

FIG. 2 is a rear isometric view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof; and,

FIG. 6 is a top view thereof.

The broken line perimeter of the large unshaded rectangular region on the front of the case in FIGS. 1 and 3 represents a boundary of the claimed design. All other broken lines depict unclaimed environment. The broken lines and unshaded regions bounded by broken lines form no part of the claimed design.