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Publication numberUSD335966 S
Publication typeGrant
Application numberUS 07/483,006
Publication dateJun 1, 1993
Filing dateFeb 22, 1990
Publication number07483006, 483006, US D335966 S, US D335966S, US-S-D335966, USD335966 S, USD335966S
InventorsRobert A. Schwartzkopf, Roy L. Ruggles
Original AssigneeCosco, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Step stool
US D335966 S
Abstract  available in
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  1. The ornamental design for a step stool, as shown and described.

FIG. 1 is a front elevational view of a step stool showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view, the right side being a mirror image thereof;

FIG. 6 is a cross-sectional view of the tread surfaces of FIG. 2 thereof;

FIG. 7 is a top plan view, of a second embodiment, the difference being in the removal of the diagonal tread strips on each step thereof;

FIG. 8 is a bottom plan view, the difference being in the removal of the rib structure under each step thereof; and,

FIG. 9 is a perspecitve view of the first embodiment of FIGS. 1-5.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8136885Mar 3, 2009Mar 20, 2012Perlstein ElizabethMethod and apparatus for providing rest for the feet of children with special needs
US8661991Apr 3, 2012Mar 4, 2014Bradley R. EvelethFoldable stool or table
U.S. ClassificationD06/350, D06/349