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The ornamental design for a trackball for a computer, as shown and described. |
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FIG. 1 is a top, front, right side perspective view of a trackball for a computer showing my new design;
FIG. 2 is a top plan view thereof on a greatly enlarged scale;
FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a rear elevational view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 20 1989 | SACHERMAN, JAMES E | CURTIS MANUFACTURING COMPANY, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 005207 | /0428 | |
| Dec 22 1989 | Curtis Manufacturing Company, Inc. | (assignment on the face of the patent) | / | |||
| Mar 30 1993 | CURTIS MANUFACTURING CO , INC A CORP OF NEW HAMPSHIRE | Bankers Trust Company | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 006516 | /0184 | |
| Nov 21 1994 | CURTIS MANUFACTURING CO , INC | CITICORP USA, INC | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 007244 | /0099 | |
| Nov 21 1994 | Bankers Trust Company | CURTIS MANUFACTURING CO , INC | RELEASE AND REASSIGNMENT | 007251 | /0338 | |
| Mar 05 1997 | CURTIS MANUFACTURING CO , INC | CURTIS COMPUTER PRODUCTS, INC | MERGER SEE DOCUMENT FOR DETAILS | 008621 | /0275 | |
| Nov 24 1998 | CITICORP USA, INC | FIRST NATIONAL BANK OF CHICAGO, THE | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 009748 | /0553 |
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