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			 The ornamental design for a keyboard for data processing system, as shown and described.  | 
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FIG. 1 is a front elevational view of a keyboard for data processing system showing my new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a top, front, right side perspective view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Feb 23 1989 | YOSHITAKE, ISAMU | CASIO COMPUTER CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 005050 | /0415 | |
| Feb 27 1989 | Casio Computer Co., Ltd. | (assignment on the face of the patent) | / | 
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