US D300073 S
FIG. 1 is a front perspective view of a portable extension ramp showing my new design, the broken lines are for illustrative purposes only and form no part of the claimed design;
FIG. 2 is a right side elevational view thereof, showing the ramp in fully closed condition;
FIG. 3 is an enlarged front elevational view thereof;
FIG. 4 is an enlarged rear elevational view thereof;
FIG. 5 is an enlarged right side elevational view thereof, showing the ramp in fully extended condition;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.