U.S. patents available from 1976 to present.
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Telephone instrument and distribution system

Patent 5210788 Issued on May 11, 1993. Estimated Expiration Date: Icon_subject March 27, 2012. 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

1870547

3322905

Combined signal and electrical power distribution system Patent #: 5068890
Issued on: 11/26/1991
Inventor: Nilssen, ;, , , --> Nilssen

Inventor

Application

No. 860234 filed on 03/27/1992

US Classes:

455/462, Including private cordless extension system455/402Over power line

Examiners

Primary: Schreyer, Stafford D.

International Class

H04M 001/274

Abstract

In a combined telephone and electric power distribution system, both telephone signals and electric power are distributed by way of a common distribution system wherein signal conducting means (such as optical fibers) and electric power conducting means are routed alongside each other to/from various utilization points, such as to/from a computer, a special lighting fixture, a power receptacle and/or a special telephone instrument; which special telephone instrument has feature whereby the mere lifting of the receiver causes either a pre-programmed prefix or a pre-programmed telephone number to be dialed automatically. At some of these utilization points, telephone signal receptacles are provided alongside electric power receptacles. At other points, the signal conducting means is terminated in a radio transceiver and wireless signal radiation/receiving means. In a typical situation, such a transceiver has its antenna mounted at or near a ceiling lighting fixture; which radio antenna interacts with some other transceiver combined with a telephone and/or other information-handling apparatus located nearby. In addition to being used for transmitting telephone and/or other information signals, the signal conducting means is used for controlling the flow and/or usage of electric power, such as control of light from individual lighting fixtures, for distributed protection against electrical circuit overload and/or fire hazards. Also included is a provision for supplying uninterruptible power to selected utilization points.

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