Stackable step

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Description

FIG. 1 is a side view of the stackable step in accordance with the invention.

FIG. 2 is a top view of the stackable step in accordance with the invention.

FIG. 3 is a bottom plan view of the stackable step in accordance with the invention.

FIG. 4 is an end view of the stackable step in accordance with the invention.

FIG. 5 is a cross-sectional view taken at 5--5 of FIG. 4; and,

FIG. 6 is a cross-sectional view taken at 6--6 of FIG. 1.

Referenced Cited
U.S. Patent Documents
D244494 May 31, 1977 Dottinger
D375290 November 5, 1996 Hall
5029671 July 9, 1991 Larson
5154678 October 13, 1992 Adamczyk et al.
5318489 June 7, 1994 Irwin
Other references
  • Brochure on Shure-Step of Crest-Step-On, Inc., undated, but believed to be 1997.
Patent History
Patent number: D413989
Type: Grant
Filed: Dec 18, 1998
Date of Patent: Sep 14, 1999
Inventor: David C. Dupont (Houston, TX)
Primary Examiner: Doris Clark
Law Firm: Vaden, Eickenroht & Thompson, L.L.P.
Application Number: 0/97,946
Classifications
Current U.S. Class: Stair, Ladder, Scaffold, Or Similar Support (D25/62)
International Classification: 2504;