Bottom Frame of Collapsible Cart

FIG. 1 is a perspective view of a bottom frame of collapsible cart showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view of the bottom frame of collapsible cart where the bottom frame of collapsible cart is in a configuration of use.

The broken lines in FIG. 9 showing a collapsible cart depict environment and form no part of the claimed design. The other broken lines in the drawings depict portions of the bottom frame of collapsible cart and form no part of the claimed design.