Ladder step extender

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Description

FIG. 1 is an isometric view of the ladder step extender of this design.

FIG. 2 is a top view of the ladder step extender.

FIG. 3 is a left side view of the ladder step extender of this design.

FIG. 4 is a right side view of the ladder step extender.

FIG. 5 is a front view of the ladder step extender.

FIG. 6 is a back view of the ladder step extender; and,

FIG. 7 is a bottom view of the ladder step extender of this invention.

Referenced Cited
U.S. Patent Documents
D158136 April 1950 Simon
D390669 February 10, 1998 Armstrong
1064693 June 1913 Taylor
2899011 August 1959 Babits
3294197 December 1966 Kwiatkowski
4437544 March 20, 1984 Anderson et al.
4972923 November 27, 1990 Krause
5056620 October 15, 1991 Zumwalt et al.
5072808 December 17, 1991 Spalt et al.
5465809 November 14, 1995 Panicci
Patent History
Patent number: D409765
Type: Grant
Filed: Apr 3, 1998
Date of Patent: May 11, 1999
Inventors: Donald R. Armstrong (Duluth, MN), Phillip F. Bolf (Duluth, MN)
Primary Examiner: Doris Clark
Attorney: Richard J. Grundstrom
Application Number: 0/86,074
Classifications
Current U.S. Class: Stair Tread, Step Or Ladder Rung (D25/69)
International Classification: 2504;