4. Chemistry: electrical current producing apparatus, product, and
  5. Cell support for removable cell
  6. Having disparate support structure, e.g., eyeglass temple, etc.

Heinz Hardt

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"Ear" hearing aid

Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent

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Contact arrangement for the battery of an in-ear hearing aid

Chemistry: electrical current producing apparatus – product – and – Cell support for removable cell – Having disparate support structure – e.g. – eyeglass temple – etc.
Patent

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Hearing aid

Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent

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Profile ID: LFUS-PAI-P-720360

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