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The ornamental design of a stair tread having a slip-resistant surface, as shown and described. |
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FIG. 1 is a perspective view of the stair tread having a slip-resistant surface;
FIG. 2 is a left elevation view of the stair tread having a slip-resistant surface;
FIG. 3 is a front elevation view of the stair tread having a slip-resistant surface;
FIG. 4 is a rear elevation view of the stair tread having a slip-resistant surface;
FIG. 5 is a top plan view of the stair tread having a slip-resistant surface; and,
FIG. 6 is a bottom plan view of the stair tread having a slip-resistant surface.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Nov 08 1996 | Harsco Corporation | (assignment on the face of the patent) | / | |||
| May 01 1998 | Harsco Corporation | Harsco Technologies Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009187 | /0903 | |
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