Portable stair platform

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of a portable stair platform showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Claims

The ornamental design for a portable stair platform, as shown and described.

Referenced Cited
U.S. Patent Documents
352716 November 1886 Slack
1057722 April 1913 Goetz
4237661 December 9, 1980 Adams et al.
4753320 June 28, 1988 Walter
D306487 March 6, 1990 Fowler, Jr.
5715910 February 10, 1998 Koch et al.
5870788 February 16, 1999 Witkin
7162760 January 16, 2007 Schweitzer
Patent History
Patent number: D621959
Type: Grant
Filed: Feb 23, 2010
Date of Patent: Aug 17, 2010
Inventor: Alan Klockler (North Massapequa, NY)
Primary Examiner: Doris Clark
Attorney: Dale J. Ream
Application Number: 29/356,251
Classifications
Current U.S. Class: Stair, Ladder, Scaffold, Or Similar Support (D25/62)