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The ornamental design for an electronic keyboard musical instrument, as shown.
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| Patent | Priority | Assignee | Title |
| D572296, | Dec 28 2007 | Casio Keisanki Kabushiki Kaisha | Electronic keyboard musical instrument |
| D572299, | Dec 28 2007 | Casio Keisanki Kabushiki Kaisha | Electronic keyboard musical instrument |
| D572300, | Dec 28 2007 | Casio Keisanki Kabushiki Kaisha | Electronic keyboard musical instrument |
| D585478, | Jan 16 2008 | Yamaha Corporation | Electronic keyboard instrument |
| D669116, | Mar 17 2011 | Roland Corporation | Electronic keyboard |
| D696714, | Dec 27 2012 | Yamaha Corporation | Electronic keyboard |
| D696715, | Dec 27 2012 | Yamaha Corporation | Electronic keyboard |
| D907108, | Apr 10 2018 | Yamaha Corporation | Electronic keyboard |
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| D326107, | Aug 05 1989 | Yamaha Corporation | Electronic keyboard musical instrument |
| D404059, | Feb 28 1997 | Yamaha Corporation | Electronic keyboard musical instrument |
| D483793, | Mar 12 2002 | Yamaha Corporation | Electronic keyboard musical instrument |
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| D518085, | Dec 22 2004 | Casio Keisanki Kabushiki Kaisha | Electronic keyboard musical instrument |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 22 2007 | OGINO, MASAKI | CASIO KEISANKI KABUSHIKI KAISHA, D B A CASIO COMPUTER CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 018969 | /0715 | |
| Jan 26 2007 | Casio Keisanki Kabushiki Kaisha | (assignment on the face of the patent) | / |
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