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The ornamental design for a hearing aid device, as shown and described.
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Jul 01 2019 | OTICON MEDICAL A/S | (assignment on the face of the patent) | / | |||
May 21 2024 | OTICON MEDICAL A S | Cochlear Limited | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 067592 | /0405 |
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