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The ornamental design for a calculator, as shown. |
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FIG. 1 is a top plan view of a calculator showing our new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;
FIG. 4 is a front elevational view thereof; and,
FIG. 5 is a bottom plan view thereof.
Chen, Michael, Chen, Chiou-Shing
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| 4313108, | Dec 07 1978 | Casio Computer Co., Ltd. | Electric apparatus for displaying a plurality of key symbols on a single passive display |
| 200477, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Oct 02 1990 | CHEN, MICHAEL | ALCRAFT, INC , A CORP OF RHODE ISLAND | ASSIGNMENT OF ASSIGNORS INTEREST | 005492 | /0644 | |
| Oct 02 1990 | CHEN, CHIOU-SHING | ALCRAFT, INC , A CORP OF RHODE ISLAND | ASSIGNMENT OF ASSIGNORS INTEREST | 005492 | /0644 | |
| Oct 19 1990 | Alcraft, Inc. | (assignment on the face of the patent) | / |
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