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Expired Australian patentAustralia

Demultiplexor circuit multiplexor circuit delay line circuit and clock multiplying circuit

AU 1993045182 · Applicant: Telefonaktiebolaget Lm Ericsson Publ

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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 15, 1993 and granted October 23, 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 15, 2014.
  • A pharmaceutical extension adds at most five years, so even that would have ended by June 15, 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 15, 1993
GrantedOctober 23, 1997
Term ended byJune 15, 2014
Application numberAU 1993045182
Classification (IPC)H04J3/06 +2 more

Timeline

Timeline From IP Australia dates

1994199720002003200620092012Application filedJune 15, 1993Patent grantedOct 23, 1997Term ended byJune 15, 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.