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The ornamental design for an artificial ski surface unit, as shown and described. |
FIG. 1 is a top plan view of an artificial ski surface unit showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a side view thereof; and
FIG. 6 is a view of the other side thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
May 24 1979 | Port-a-Slope Corporation | (assignment on the face of the patent) | / |
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