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Publication numberUSD397228 S
Publication typeGrant
Application numberUS 29/071,723
Publication dateAug 18, 1998
Filing dateJun 5, 1997
Publication number071723, 29071723, US D397228 S, US D397228S, US-S-D397228, USD397228 S, USD397228S
InventorsRandall Bell, Walter Herbst, Eric C. Horne, Edward E. Heald
Original AssigneeWerner Co.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Step ladder
US D397228 S
Abstract  available in
Images(11)
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Claims(1)
  1. The ornamental design for a step ladder, as shown and described.
Description

FIG. 1 is perspective view of a first embodiment of the invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof, being the mirror of the right side view; and,

FIG. 5 is a top view thereof;

FIG. 6 is a perspective view of a second embodiment of the invention;

FIG. 7 is a front view thereof;

FIG. 8 is a rear view thereof;

FIG. 9 is a left side view thereof, being the mirror of the right side view; and,

FIG. 10 is a top view thereof; and,

FIG. 11 is a perspective view of a third embodiment of the present invention, the top, left, and rear being substantially consistent with the top, left, and rear of the step ladder of the first embodiment.

Non-Patent Citations
Reference
1Cosco brochure, "Pro Fold" ladder (1995).
2Cosco brochure, ladder model No. 11-725 (1995).
3Cosco brochure, ladder model No. 11-740 "Tri Step Work Platform" (1995).
4Cosco brochure, ladder model No. 11-780 "Pro Step" (1995).
5Cosco brochure, ladder models 11-135 and 11-302 (1995).
6Cosco brochure, ladder models 11-300 and 11-307 (1995).
7U.S. Design Patent Application No. 29/048,682 Patent #D388882 Patent date Jan. 6, 1998.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6347687Sep 16, 1999Feb 19, 2002Pt Indal Aluminum Industry Tbk.Compact collapsible step ladder
Classifications
U.S. ClassificationD25/65