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Expired Australian patentAustralia

Distributed circuit switch

AU 1993045176 · Applicant: Telefonaktiebolaget Lm Ericsson Publ

AusPat record

Overview

Drawings and full text

Its specification, documents and status are on IP Australia's AusPat.

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Listed from its IP Australia record in Patent Yard's archive of Australian patents past their term. Its claims, description and drawings are in the AusPat record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed June 10, 1993 and granted October 2, 1997. An Australian standard patent lasts 20 years from its date of patent, which is at most a year after this filing, so its term ended by June 10, 2014.
  • A pharmaceutical extension adds at most five years, so even that would have ended by June 10, 2019.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 10, 1993
GrantedOctober 2, 1997
Term ended byJune 10, 2014
Application numberAU 1993045176
Classification (IPC)H04Q11/04

Timeline

Timeline From IP Australia dates

1994199720002003200620092012Application filedJune 10, 1993Patent grantedOct 2, 1997Term ended byJune 10, 2014

Sources & verification

Everything on this page comes from the IP Australia record linked above. Data from IP Australia's IPGOD, licensed under CC BY 2.5 AU.