Step stool
Hsu December 13, 2
U.S. patent number D650,185 [Application Number D/388,604] was granted by the patent office on 2011-12-13 for step stool. This patent grant is currently assigned to Hsiang Fu Chia Enterprise Co., Ltd.. Invention is credited to Chiung Yueh Hsu.
| United States Patent | D650,185 |
| Hsu | December 13, 2011 |
Step stool
Claims
CLAIM The ornamental design for a step stool, as shown and described.
| Inventors: | Hsu; Chiung Yueh (Hemei Township, Changhua County, TW) |
|---|---|
| Assignee: | Hsiang Fu Chia Enterprise Co.,
Ltd. (Changhua County, TW) |
| Appl. No.: | D/388,604 |
| Filed: | March 31, 2011 |
| Current U.S. Class: | D6/349 |
| Current International Class: | 0601 |
| Field of Search: | ;D6/335,336,337,338,339,349,350,351,352,353 ;291/175,451.2,452.11,452.12,461,462 ;5/12.1,12.2 |
References Cited [Referenced By]
U.S. Patent Documents
| D184390 | February 1959 | Cramer |
| D216508 | January 1970 | Dottinger |
| 3559761 | February 1971 | Wehner |
| 3599750 | August 1971 | Serwer |
| D244494 | May 1977 | Dottinger |
| D262419 | December 1981 | Cramer |
| D524069 | July 2006 | Lim |
| D570125 | June 2008 | Gonzalez |
| D640878 | July 2011 | Huang et al. |
Attorney, Agent or Firm: Lei; Leong C.
Description
FIG. 1 is a front perspective view of a step stool showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left elevational view thereof;
FIG. 5 is a right elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
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