Portable stair
Henson , et al. March 31, 2
U.S. patent number D589,630 [Application Number D/291,665] was granted by the patent office on 2009-03-31 for portable stair. Invention is credited to Blake D. Henson, Tim Lewis Scott, James D. Thompson.
| United States Patent | D589,630 |
| Henson , et al. | March 31, 2009 |
Portable stair
Claims
CLAIM The ornamental design for a portable stair, as shown.
| Inventors: | Henson; Blake D. (Springdale, AR), Scott; Tim Lewis (Lowell, AR), Thompson; James D. (Springdale, AR) |
|---|---|
| Appl. No.: | D/291,665 |
| Filed: | September 10, 2007 |
| Current U.S. Class: | D25/65; D6/349 |
| Current International Class: | 2504 |
| Field of Search: | ;D25/65 ;D6/349 ;297/461 ;182/33 |
References Cited [Referenced By]
U.S. Patent Documents
| 3443722 | May 1969 | Cloyd et al. |
| 4105117 | August 1978 | Atkin et al. |
| 4760921 | August 1988 | Licari |
| 4770300 | September 1988 | Klein |
| D307800 | May 1990 | Hradisky |
| 4950033 | August 1990 | Anderson |
| D346704 | May 1994 | Grosfillex |
| 5518084 | May 1996 | Short et al. |
| 5641034 | June 1997 | Calmeise et al. |
| D449386 | October 2001 | Cheris et al. |
| 6568506 | May 2003 | Donnalley |
| D485021 | January 2004 | Gonzalez |
| D512537 | December 2005 | Barnes et al. |
Attorney, Agent or Firm: Cox; Boyd D.
Description
FIG. 1 is a front elevation of the portable stair of the present invention, the rear side elevation being the mirror image of the front elevation;
FIG. 2 is a right side elevation of the portable stair of FIG. 1, the left side elevation being the mirror image of the right side elevation;
FIG. 3 is a top plan view of the portable stair of FIG. 1; and,
FIG. 4 is a bottom plan view of the portable stair of FIG. 1.
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