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The ornamental design for a track ball, as shown and described. |
FIG. 1 is a perspective view of a track ball showing my new design.
FIG. 2 is a front elevational view of the track ball embodying the design.
FIG. 3 is a plan view of the track ball, as shown in FIG. 2.
FIG. 4 is a bottom view of the track ball, as shown in FIG. 2.
FIG. 5 is an end elevational view of the track ball as appearing from the rightward end in FIG. 2.
FIG. 6 is an end elevational view of the track ball as appearing from the leftward end in FIG. 2.
FIG. 7 is a rear elevational view of the track ball, as shown in FIG. 2.
FIG. 8 is a perspective view showing the track ball, a TV display unit and a processing unit being shown with associated connecting cables in broken lines for illustrative purposes only.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Feb 20 1986 | IWATA, SATORU | HAL LABORATORY INC | ASSIGNMENT OF ASSIGNORS INTEREST | 004569 | /0108 | |
Mar 07 1986 | Hal Laboratory Inc. | (assignment on the face of the patent) | / |
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