Stepladder
Description
Claims
We claim the ornamental design for stepladder, as shown.
Referenced Cited
U.S. Patent Documents
Other references
| 1283212 | October 1918 | Kloepfer et al. |
| 1778898 | October 1930 | Konigsberg |
| 2144440 | January 1939 | Gaffers |
| 2525104 | October 1950 | St. Cyr |
| 3085651 | April 1963 | Rich |
| 3269485 | August 1966 | Larson |
| 4027741 | June 7, 1977 | Derrick |
| 4204587 | May 27, 1980 | Larson |
| 4298093 | November 3, 1981 | Wing |
| 4371055 | February 1, 1983 | Ashton et al. |
| 4560030 | December 24, 1985 | Mucelli |
| 4834216 | May 30, 1989 | Wallick et al. |
| D388882 | January 6, 1998 | Kain |
| 5722507 | March 3, 1998 | Kain |
| 5762163 | June 9, 1998 | Kain |
| 6026933 | February 22, 2000 | King et al. |
- Keller Product Catalog, 2000, 3 pages.
Patent History
Patent number: D554771
Type: Grant
Filed: Jun 12, 2006
Date of Patent: Nov 6, 2007
Assignee: Tricam Industries, Inc. (Eden Prairie, MN)
Inventors: Jeff Skubic (Elk River, MN), Jon Sommers (Eden Prairie, MN), Kirby Howard (Acworth, GA)
Primary Examiner: Doris Clark
Attorney: Patterson, Thuente, Skaar & Christensen, P.A.
Application Number: 29/261,282
Type: Grant
Filed: Jun 12, 2006
Date of Patent: Nov 6, 2007
Assignee: Tricam Industries, Inc. (Eden Prairie, MN)
Inventors: Jeff Skubic (Elk River, MN), Jon Sommers (Eden Prairie, MN), Kirby Howard (Acworth, GA)
Primary Examiner: Doris Clark
Attorney: Patterson, Thuente, Skaar & Christensen, P.A.
Application Number: 29/261,282
Classifications
Current U.S. Class:
Ladder (D25/64)