CPC Subgroup
G02C 11/06 Hearing aids (construction of electric hearing aids H04R25/00)
Full Title
Non-optical adjuncts; Attachment thereof (G02C7/16 takes precedence) > Hearing aids (construction of electric hearing aids H04R25/00)
G02C 11/06 Non-optical adjuncts; Attachment thereof (G02C7/16 takes precedence) > Hearing aids (construction of electric hearing aids H04R25/00)