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Step ladder
D401353 Step ladder
Patent Drawings:Drawing: D401353-10    Drawing: D401353-11    Drawing: D401353-12    Drawing: D401353-2    Drawing: D401353-3    Drawing: D401353-4    Drawing: D401353-5    Drawing: D401353-6    Drawing: D401353-7    Drawing: D401353-8    
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(11 images)

Inventor: Bell, et al.
Date Issued: November 17, 1998
Application: D/071,634
Filed: June 5, 1997
Inventors: Bell; Randall (River Forest, IL)
Herbst; Walter (Lake Forest, IL)
Assignee: Werner Co. (Greenville, PA)
Primary Examiner: Clark; Doris
Assistant Examiner:
Attorney Or Agent: Howrey & Simon
U.S. Class: D25/64; D25/65
Field Of Search: D25/62; D25/65; D25/64; 182/26; 182/33; 182/33.2
International Class:
U.S Patent Documents: D236244; 4205411; 4276955; 4485892; 4557350; 4653713; 4706918; 4730802; 4979590; 5370263; 5421429; 5542535; 5542553
Foreign Patent Documents: 2093516; 2192025
Other References: Cosco brochure, ladder model No. 11-740 "Tri Step Work Platform" (1995)..
Cosco brochure, ladder model No. 11-780 "Pro Step" (1995)..
Cosco brochure, "Pro Fold" ladder (1995)..
Cosco brochure, ladder model No. 11-725 (1995)..
Cosco brochure, ladder models 11-300 and 11-307 (1995)..
Cosco brochure, ladder models 11-135 and 11-302 (1995)..
U.S. Design Patent Application No. 29/048,682 filed Jan. 11, 1996..









Abstract:
Claim: 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.

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