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The ornamental design for a toy building block, as shown and described. |
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FIG. 1 is a top view of the toy building block;
FIG. 2 is a side view of the toy building block;
FIG. 3 is an end view of the toy building block;
FIG. 4 is an underside view of the toy building block;
FIG. 5 is a top perspective view of the toy building block; and,
FIG. 6 is an underside perspective view of the toy building block.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 03 1993 | WILSON, WARREN S | Better Blocks International Limited | ASSIGNMENT OF ASSIGNORS INTEREST | 006471 | /0867 | |
| Mar 18 1993 | Better Blocks International Limited | (assignment on the face of the patent) | / |
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