Hybrid behind-the-ear and completely-in-canal hearing aid
Patent 5606621 Issued on February 25, 1997. Estimated Expiration Date: 
June 14, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 14, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3123678 3688863 3890474 Pneumatic shaping ear plug Implantable electromagnetic middle-ear bone-conduction hearing aid device Hearing aid with pull-out-string, pull-out string, and method of making a hearing aid Patent #: 5381484 InventorsAssigneeApplicationNo. 490214 filed on 06/14/1995US Classes:381/328, Ear insert381/330Hook over earExaminersPrimary: Isen, Forester W.Attorney, Agent or FirmForeign Patent References
International ClassH04R 025/00AbstractA hybrid BTE and CIC hearing aid has a BTE component which is worn behind the patient's ear and a CIC component which is worn in the bony portion of the patient's ear canal. The BTE and CIC components are connected together with a wire cable. Electroacoustic feedback is reduced or eliminated, allowing gain to be increased. The patient is not disturbed by the occlusion effect.Other References
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