US D286770 S
FIG. 1 is a perspective view of a casing of an electrical or electronic device showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side elevational view, the right side being a mirror image thereof;
FIG. 4 is a top plan view thereof; and
FIG. 5 is a bottom plan view thereof.