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The ornamental design for a calculator, as shown. |
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FIG. 1 is a front perspective view from above of a calculator embodying my new and ornamental design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a right side elevation view thereof; and,
FIG. 7 is a rear perspective view thereof from above.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| May 28 1991 | The University Court of the University of Dundee | (assignment on the face of the patent) | / | |||
| Aug 16 1991 | TUNSTALL-PEDOE, HUGH D | UNIVERSITY COURT OF THE UNIVERSITY OF DUNDEE, THE | ASSIGNMENT OF ASSIGNORS INTEREST | 005854 | /0314 |
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