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The ornamental design for a calculator, as shown. |
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FIG. 1 is a right, front and top perspective view of a calculator showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a right side elevational view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 27 1990 | CHEN, CHIU-YUAN | DATEL ELECTROCRAFT CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 005490 | /0298 | |
| Oct 24 1990 | Datel Electrocraft Corporation | (assignment on the face of the patent) | / |
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