|D674492||Non-electronic hearing aid||01/15/2013|
|7044942||Implantable fluid delivery apparatuses and implantable electrode|
Implantable fluid delivery systems and implantable electrodes are provided. The fluid delivery systems may include an implantable fluid source, a first catheter in fluid communication with the implantable fluid source, and an implantable micro-valve in fluid communi...
|4726066||Inter-oral speech aid|
A touch switch contacts on a unit housing are bridged by the fingers of a person's hand when holding the housing to trigger operation of a signal generating oscillator driving a transducer from which "voice" sound is generated and transmitted through a so...
|4272647||Speech aid apparatus|
A speech aid apparatus for laryngectomees includes a first housing having disposed therein, a sound head with a hard diaphragm held therein, an electrodynamic oscillator connected to the sound head and including a magnet system with an oscillator coil, a ...