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The ornamental design for a midi keyboard controller, as shown and described.
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The broken lines in the figures illustrate portions of the MIDI keyboard controller that form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| May 09 2022 | CHEN, SHUYU | GUANGZHOU RANTION TECHNOLOGY CO ,LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 060073 | /0824 | |
| May 09 2022 | HUANG, GUANZE | GUANGZHOU RANTION TECHNOLOGY CO ,LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 060073 | /0824 | |
| May 16 2022 | Guangzhou Rantion Technology Co., Ltd | (assignment on the face of the patent) | / |
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