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The ornamental design for a blackboard desk toy, as shown and described. |
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FIG. 1 is a perspective view of a blackboard desk toy showing my new design;
FIG. 2 is a left side elevational view thereof, the right side elevational view being a substantial mirror image;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof; and
FIG. 6 is a bottom plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 01 1900 | CATELLI, PIETRO | ARTSANA SPA, VIA MENTANA 21-22100 COMO, ITALY | ASSIGNMENT OF ASSIGNORS INTEREST | 004157 | /0472 | |
| Jul 28 1983 | Artsana S.p.A. | (assignment on the face of the patent) | / |
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