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The ornamental design for a keyboard, as shown and described. |
FIG. 1 is a front top and side perspective view of a keyboard showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a side elevational view thereof opposite that shown in FIG. 3;
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a top plan view thereof.
Sauer, Ralf, Marquardt, Kai-Uwe, Sachs, Ekkehard
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 10 1991 | Marquardt GmbH | (assignment on the face of the patent) | / | |||
Oct 10 1991 | MARQUARDT, KAI-UWE | Marquardt GmbH | ASSIGNMENT OF ASSIGNORS INTEREST | 005915 | /0214 | |
Oct 10 1991 | SACHS, EKKEHARD | Marquardt GmbH | ASSIGNMENT OF ASSIGNORS INTEREST | 005915 | /0214 | |
Oct 10 1991 | SAUER, RALF | Marquardt GmbH | ASSIGNMENT OF ASSIGNORS INTEREST | 005915 | /0214 |
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