Step ladder

- Cosco Management, Inc.
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Description

FIG. 1 is a perspective view of a step ladder illustrating our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right-side elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a top plan view thereof.

Claims

The ornamental design for a step ladder, as shown and described.

Referenced Cited
U.S. Patent Documents
4204587 May 27, 1980 Larson
4371055 February 1, 1983 Ashton et al.
4560030 December 24, 1985 Mucelli
4834216 May 30, 1989 Wallick et al.
D331289 November 24, 1992 Davis
D388882 January 6, 1998 Kain
5722507 March 3, 1998 Kain
6000497 December 14, 1999 Kain et al.
D433156 October 31, 2000 Gibson et al.
D444574 July 3, 2001 Gibson et al.
D449385 October 16, 2001 Rosko
6390238 May 21, 2002 Gibson et al.
6427805 August 6, 2002 Gibson et al.
6443261 September 3, 2002 Gibson et al.
D466225 November 26, 2002 Rosko
6536557 March 25, 2003 Gibson et al.
6550579 April 22, 2003 Gibson et al.
Patent History
Patent number: D576290
Type: Grant
Filed: May 9, 2006
Date of Patent: Sep 2, 2008
Assignee: Cosco Management, Inc. (Wilmington, DE)
Inventors: Thomas J. Meyers (Greenwood, IN), Paul F. Meyers (Fishers, IN)
Primary Examiner: Doris Clark
Attorney: Barnes & Thornburn LLP
Application Number: 29/246,770
Classifications
Current U.S. Class: Ladder (D25/64)