US D302451 S
FIG. 1 is a front perspective view of a stair climbing exercise apparatus showing our design;
FIG. 2 is a side elevational view thereof, the side opposite being substantially a mirror image;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a bottom view thereof.