Wireless telephone system

Patent 4866732 Issued on September 12, 1989. Estimated Expiration Date:

September 12, 2006. 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.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Mitel Telecom Limited

Application

No. 06/819044 filed on 01/15/1986

US Classes:

375/141, End-to-end transmission system375/145, Having specific signaling for code synchronization379/55.1, HAVING NEAR FIELD LINK (E.G., CAPACITIVE, INDUCTIVE)455/523, Using radiating transmission line455/555Wireless private branch exchange (PBX) (i.e., wireless link to extension unit)

Examiners

Primary: Griffin, Robert L.
Assistant: Chin, Stephen

Attorney, Agent or Firm

Antonelli, Terry & Wands

International Classes

H04B 5/00 (20060101)
H04B 1/69 (20060101)

Foreign Application Priority Data

1985-02-04 GB

Abstract

A wireless telephone communication system for wireless, voice, data or voice and data terminals comprising apparatus at a central location for receiving one or a plurality of signals for communication with selected ones of wireless communication terminals, apparatus for converting the signals to spread spectrum radio frequency signals, a leaky transmission line located in a communication region, apparatus for applying the spread spectrum radio frequency signals to the transmission line for electromagnetic radiation within the region, at least one wireless communication terminal adapted to receive a predetermined one of the spread spectrum radio frequency signals and for demodulating it into an intelligible signal.