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The ornamental design for a trackball, as shown and described. |
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FIG. 1 is the perspective view of a design for trackball showing my design;
FIG. 2 is the front elevational view thereof;
FIG. 3 is the rear elevational view thereof;
FIG. 4 is the left side elevational view thereof;
FIG. 5 is the right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
| Patent | Priority | Assignee | Title |
| Patent | Priority | Assignee | Title |
| 4952919, | Apr 06 1989 | ACCELRYS INC | Trackball mechanism |
| 5122654, | May 25 1990 | LOGITECH EUROPE, S A | Ergonomic thumb-actuated trackball combined with control switches |
| D292600, | Apr 09 1984 | ASEA Aktiebolag | Track ball unit |
| D297952, | May 29 1987 | Kabushiki Kaisha ASCII | Joystick |
| D342241, | Oct 22 1990 | Microsoft Corporation | Computer trackball |
| D348083, | Jan 06 1993 | Smith Engineering | Video game controller |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Nov 06 1993 | CHUNG, STEPHEN | Silitek Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 006845 | /0654 | |
| Dec 17 1993 | Silitek Corporation | (assignment on the face of the patent) | / | |||
| Nov 13 2002 | Silitek Corporation | Lite-On Technology Corporation | MERGER SEE DOCUMENT FOR DETAILS | 015074 | /0133 |
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