[Class : 10] Acoustic Amplifiers (Hearing Aids) For Partially Deaf Persons; Apparatus For Use In Alleviating Hearing Disorders;Apparatus For Use In Testing Hearing Disorders; Apparatus For Use In Treating Hearing Disorders; Ear Adaptors For Hearing Aids; Ear Plugs [Hearing Protection Devices]; Hearing Aids; Hearing Apparatus For The Deaf; Hearing Devices For Use By...