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Expired Australian patentAustralia

Steam turbine control

AU 1985049159 · Applicant: Hitachi Limited

AusPat record

Overview

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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 October 29, 1985 and granted November 23, 1988. 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 October 29, 2006.
  • A pharmaceutical extension adds at most five years, so even that would have ended by October 29, 2011.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 29, 1985
GrantedNovember 23, 1988
Term ended byOctober 29, 2006
Application numberAU 1985049159
Classification (IPC)F01D17/20 +2 more

Timeline

Timeline From IP Australia dates

1986198919921995199820012004Application filedOct 29, 1985Patent grantedNov 23, 1988Term ended byOct 29, 2006

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.