Rolling stair

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Description

FIG. 1 is a front view of the rolling stair of the present invention.

FIG. 2 is a rear view thereof.

FIG. 3 is a top view thereof.

FIG. 4 is a bottom view thereof.

FIG. 5 is a right side view thereof. The left side view is a mirror image thereof; and,

FIG. 6 is a perspective view thereof.

Referenced Cited
U.S. Patent Documents
D304499 November 7, 1989 Rogers et al.
2551345 May 1951 Scott
2805703 September 1957 Wise
Patent History
Patent number: D411019
Type: Grant
Filed: Jun 26, 1998
Date of Patent: Jun 15, 1999
Inventor: Charles G. Curtis (Colorado Springs, CO)
Primary Examiner: Doris Clark
Attorney: Richard W. Hanes
Application Number: 0/90,002
Classifications
Current U.S. Class: Stair, Ladder, Scaffold, Or Similar Support (D25/62)
International Classification: 2504;