Cordless telephone headset
Patent 5113428 Issued on May 12, 1992. Estimated Expiration Date: 
September 4, 2010. 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.
September 4, 2010. 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 ReferencesCordless telephone switch and line selector Communication apparatus for hostile environments Communication headset Communications headset Telephone head/hand set Cordless headset telephone Headband radiophone combination set Patent #: 4930148 InventorApplicationNo. 578884 filed on 09/04/1990US Classes:455/575.2, Headgear379/430, Body supported (e.g., headgear)D14/138, Mobile telephone type (i.e., cellular or cordless unit with provision for initiation or reception of telephone calls)D14/150With provision for dialing or switching (i.e., keyset touch panel, dial, etc.)ExaminersPrimary: Dwyer, James L.Assistant: Bost, Dwayne D. Attorney, Agent or FirmInternational ClassesH04M 011/00H04B 001/38 AbstractA cordless telephone is disclosed in which the portable unit is totally contained in a headset. The headset includes its own push button key pad and related control buttons, a rechargeable battery and an RF transceiver. In addition, the preferred embodiment of the portable unit has two earphones and a volume control for enhanced and realistic binaural sound and for reducing background noise interference, a microphone flexibly mounted to the headset, and a supplementary head strap for helping to secure the unit to the user's head.Field of SearchBody supported (e.g., headgear)Body attached or connected Transportable Radio transceiver (e.g., walkie-talkie, 2-way radio, etc.) Mobile telephone type (i.e., cellular or cordless unit with provision for initiation or reception of telephone calls) Telephone equipment Telephone or base therefor Freestanding (5) With provision for dialing or switching (i.e., keyset touch panel, dial, etc.) | |
