Wheeled step stool

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Description

FIG. 1 is a perspective view of a wheeled step stool showing our new design thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view from another angle.

Claims

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

Referenced Cited
U.S. Patent Documents
D184390 February 1959 Cramer
D216508 January 1970 Dottinger
3559761 February 1971 Wehner
3599750 August 1971 Serwer
D244494 May 31, 1977 Dottinger
D262419 December 29, 1981 Cramer
D524069 July 4, 2006 Lim
D566408 April 15, 2008 Gonzalez
D566977 April 22, 2008 Emge
D566978 April 22, 2008 Gonzalez
D570125 June 3, 2008 Gonzalez
Patent History
Patent number: D640878
Type: Grant
Filed: Feb 16, 2011
Date of Patent: Jul 5, 2011
Inventors: Chia-Ling Huang (Taichung), Chun-Lung Liu (Changhua County)
Primary Examiner: Sandra Snapp
Attorney: Muncy, Geissler, Olds & Lowe, PLLC
Application Number: 29/385,593
Classifications
Current U.S. Class: D6/350