The ornamental design for a portableinsulatedchest, as shown and described.
FIG. 1 is a front elevational view of a portable insulated chest embodying
our design, the rear view thereof being the same as the front;
FIG. 2 is a side elevational view of the portable insulated chest shown in
FIG. 1 taken from the right side thereof, the left side view being the
same as the right side;
FIG. 3 is a top plan view of the portable insulated chest shown in FIG. 1;
and