(ABANDONED) IC 010. US 026 039 044. G & S: Medical instruments for the treatment of Tinnitus; hearing aids and their structural parts; hearing aids for incorporation into spectacles
(ABANDONED) IC 037. US 100 103 106. G & S: Repair and maintenance of medical and otological apparatus and instruments, in particular of hearing aids
(ABANDONED) IC 044. US 100 101. G & S: Services of a hearing-aid acoustician, namely therapeutical and medical support of hearing-impaired persons
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