U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method and apparatus for interference free communications between a remote handset and a host subscriber unit in a Cellular Radio Telephone System

Patent 4659878 Issued on April 21, 1987. Estimated Expiration Date: Icon_subject September 11, 2005. 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

3906166

Mobile radio telephone system Patent #: 4363935
Issued on: 12/14/1982
Inventor: Toya

Inventor

Assignee

Application

No. 06/774712 filed on 09/11/1985

US Classes:

455/436, Handoff455/11.1, Portable or mobile repeater455/17, Plural modulated carriers455/411Privacy, lock-out, or authentication

Examiners

Primary: Rubinson, Gene Z.
Assistant: Ham, Mark E.

Attorney, Agent or Firm

International Classes

H04Q 7/38 (20060101)
H04Q 7/32 (20060101)

Abstract

A method and apparatus for providing interference free rf communications between remote handsets and host subscriber units in a Cellular Radio Telephone System includes the use of data transmission and voice channels assigned by microprocessors to track the currently assigned base station/subscriber unit channel assignment--but offset therefrom by one channel thereby to reliably and automatically arrive at an interference free channel.

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