Step stool
Latest Bei Yu Industrial Co. Patents:
Description
The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.
Claims
The ornamental design for a step stool, as shown and described.
Referenced Cited
U.S. Patent Documents
D184390 | February 1959 | Cramer |
D213552 | March 1969 | Hall |
3559761 | February 1971 | Wehner |
3599750 | August 1971 | Serwer |
D244494 | May 31, 1977 | Dottinger |
D262419 | December 29, 1981 | Cramer |
D330462 | October 27, 1992 | Szablak et al. |
D512537 | December 6, 2005 | Barnes et al. |
D524069 | July 4, 2006 | Lim |
D566408 | April 15, 2008 | Gonzalez |
D566978 | April 22, 2008 | Gonzalez |
D570125 | June 3, 2008 | Gonzalez |
D597751 | August 11, 2009 | Cohen |
Patent History
Patent number: D606768
Type: Grant
Filed: Aug 7, 2009
Date of Patent: Dec 29, 2009
Assignee: Bei Yu Industrial Co. (Tainan Hsien)
Inventor: Wen-Chih Tu (Gueiren Township, Tainna County)
Primary Examiner: Sandra Snapp
Attorney: Rosenberg, Klein & Lee
Application Number: 29/311,965
Type: Grant
Filed: Aug 7, 2009
Date of Patent: Dec 29, 2009
Assignee: Bei Yu Industrial Co. (Tainan Hsien)
Inventor: Wen-Chih Tu (Gueiren Township, Tainna County)
Primary Examiner: Sandra Snapp
Attorney: Rosenberg, Klein & Lee
Application Number: 29/311,965
Classifications
Current U.S. Class:
D6/350