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The ornamental design for a toy staircase, as shown and described. |
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FIG. 1 is a top perspective view of the toy staircase showing my new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side elevational view thereof; the left side being a mirror image thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a top plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 14 1995 | Interlego AG | (assignment on the face of the patent) | / | |||
| Nov 20 2007 | Interlego AG | LEGO A S | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 020609 | /0865 |
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