Nova Patents
CA1261981C

Wireless telephone system

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.

Term

Term ended

Expired 17 October 2008, 17.9 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

20 members in 9 offices

This recordMember, by publication datePriority claim

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Priority claims
DocumentOfficeKindDate
8502735United KingdomA
499189CanadaA

Members20

Family members, oldest first
DocumentOfficeKind
IT8619247D0ItalyD0
CN86101271AChinaA
IE860289LIrelandL
FR2577090A1FranceA1
DE3603347A1GermanyA1
GB2171576AUnited KingdomA
JPS61234135AJapanA
IT8619247A1ItalyA1
IT1188611BItalyB
GB8822635D0United KingdomD0
CA1247266ACanadaA
CA1247266A1CanadaA1
GB2208778AUnited KingdomA
GB2208778BUnited KingdomB
GB2171576BUnited KingdomB
US4866732AUnited States of AmericaA
CA1261981ACanadaA
CA1261981CThis recordCanadaC
CA1261981CThis recordCanadaC
US5005183AUnited States of AmericaA