Casing for electronic device

FIG. 1 is a perspective view of the casing for electronic device;

FIG. 2 is a front elevational view of the embodiment of the design, the rear elevational view being identical;

FIG. 3 is a left side elevational view of the embodiment of the design, the right side elevational view being identical;

FIG. 4 is a top plan view of the embodiment of the design;

FIG. 5 is a bottom plan view of the embodiment of the design; and,

FIG. 6 is an enlarged fragmented view of the embodiment of the design as indicated in FIG. 2 .

The broken lines are included in the drawings to show unclaimed subject matter only and form no part of the claimed design. The gray shown on the cover in FIGS. 1-6 represents a thin film.