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The ornamental design for a dental impression tray, as shown and described. |
FIG. 1 is a top plan view of a dental impression tray showing my new design, a bottom being a mirror image of that shown;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof; and
FIG. 6 is an enlarged perspective view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 30 1987 | Sultan Dental Products, Ltd. | (assignment on the face of the patent) | / |
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