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The ornamental design for an electronic keyboard musical instrument, as shown. |
FIG. 1 is a top front perspective view of an electronic keyboard musical instrument, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational 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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Patent | Priority | Assignee | Title |
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jun 08 1988 | MIZUSHIMA, KAZUYUKI | Yamaha Corporation | ASSIGNMENT OF ASSIGNORS INTEREST | 004931 | /0331 | |
Jun 13 1988 | Yamaha Corp. | (assignment on the face of the patent) | / |
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