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The ornamental design for 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 view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a rear view thereof; and,
FIG. 7 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 12 1991 | NAKADA, TSUTOMU | YAMAHA CORPORATION A CORP OF JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 005918 | /0020 | |
Oct 23 1991 | Yamaha Corporation | (assignment on the face of the patent) | / |
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