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The ornamental design for an electric toothbrush head, as shown and described.
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The broken lines shown in the drawings are included for the purpose of illustrating portions of the electric toothbrush head that form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 25 2021 | LIU, YAFEI | GUANGDONG MEIHONG INDUSTRIAL TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 056712 | /0040 | |
| Jun 29 2021 | GUANGDONG MEIHONG INDUSTRIAL TECHNOLOGY CO., LTD. | (assignment on the face of the patent) | / | |||
| Jun 30 2022 | GUANGDONG MEIHONG INDUSTRIAL TECHNOLOGY CO , LTD | GUANGDONG MEIHONG DENTAL TECHNOLOGY CO , LTD | CHANGE OF NAME SEE DOCUMENT FOR DETAILS | 061204 | /0566 |
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