Step Stool

FIG. 1 is a top, front, left side perspective view of a step stool, showing my new design;

FIG. 2 is a bottom, rear 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 top, front, left side perspective view of the step stool of FIG. 1 , showing the step platform in an alternate setting.

The broken lines in the figures depict portions of the step stool that form no part of the claimed design.