Google Patents Rechargeable hearing aidÄownload PDF Info Publication number US7062057B2 US7062057B2 US10/642,207 US64220703A US7062057B2 US 7062057 B2 US7062057 B2 US 7062057B2 US 64220703 A US64220703 A US 64220703A US 7062057 B2 US7062057 B2 US 7062057B2 Authority US United States Prior art keywords hearing aid battery charger battery receiving groove cover Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7062057B2 - Rechargeable hearing aid
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