Headphones
Patent 5579400 Issued on November 26, 1996. Estimated Expiration Date: 
December 5, 2014. 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.
December 5, 2014. 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 2765373 2962562 3049974 3238309 Communications headset Headset construction and method of making same Combination multiple supported variable position audio intake control devices Eyeglass frame with electroacoustic device for the enhancement of sound intelligibility Adjustable headset 5117465 InventorApplicationNo. 349456 filed on 12/05/1994US Classes:381/370, Headphone381/385Having body supported structure other than on headExaminersPrimary: Kuntz, CurtisAssistant: Le, Huyen Attorney, Agent or FirmForeign Patent References
International ClassH04R 025/00Foreign Application Priority Data1992-07-17 DEAbstractHeadphones with two receivers, which can be inserted, each preferably surrounded by a foam pad, into the two auricles of the user and fixed with a hoop, and the hoop, which fixes the two receivers in the auricles of the user, is formed by spectacles, the two receivers being fixed to the free ends of the side pieces and the free ends of the side pieces running essentially in a straight line to the center of the auricles. | |
