Case for Electronic Device

FIG. 1 is a front perspective view of a case for electronic device showing our new design; FIG. 2 is a front view thereof; FIG. 3 is a rear view thereof; FIG. 4 is a left-side view thereof; FIG. 5 is a right-side view thereof; FIG. 6 is a top view thereof; FIG. 7 is a bottom view thereof; FIG. 8 is a rear perspective view thereof; FIG. 9 is a reference bottom view showing an example state of use wherein a pen is inserted into the case; FIG. 10 is another reference bottom view showing an example state of use wherein a pen is inserted into the case; and, FIG. 11 is another reference bottom view showing an example state of use wherein a pen is inserted into the case placed in a standing position. The broken lines in the figures depict portions of a case for electronic device that form no part of the claimed design.