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The ornamental design for a computer trackball, as shown and described. |
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FIG. 1 is a top plan view of a computer trackball showing our new design;
FIG. 2 is a side perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is a rear elevational view thereof.
Nelson, Michael D., Bradley, Paul, Yurchenco, James R., Paull, Mike M., Ashmun, Stuart, Garthwaite, Charlie, Cameron, Bridget, Stephan, Allan H., Fulton, Elinor J.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 05 1993 | Microsoft Corporation | (assignment on the face of the patent) | / |
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