The ornamental design for a handle barsupportrod for shopping cart, as shown and described.
FIG. 1 is a side elevation view of a handle bar support rod for shopping
cart showing my new design. The broken lines showing of environmental
structure are for illustrative purposes only and form no part of the
claimed design;
FIG. 2 is an enlarged front elevation view thereof;
FIG. 3 is an enlarged rear elevation view thereof;