86714445
Aug 4, 2015
A programmable electric acoustic device not for medical use to be worn in or on the human ear or coupled to the human ear by wireless means to filter and reduce the intensity of certain audible sounds so that the wearer can discriminate and more clearly hear sounds
Electrical and Scientific ApparatusA programmable electric auditory device for medical use to be worn in or on the human ear or coupled to the human ear by wireless means to filter and reduce the intensity of certain audible sounds so that the wearer can discriminate and more clearly hear other sounds
Medical Apparatus