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The ornamental design for a combined guitar and synthesizer keyboard, as shown and described. |
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FIG. 1 is a front elevational view of a combined guitar and synthesizer keyboard showing my new design.
FIG. 2 is a top plan view.
FIG. 3 is a right side elevational view.
FIG. 4 is a rear elevational view.
FIG. 5 is a left side elevational view.
FIG. 6 is a bottom plan view; and
FIG. 7 is a fragmentary front perspective view of a portion of the neck of the combined guitar and synthesizer keyboard.
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