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Expired European patentEurope

Controlling the initiation of logical systems in a data processing system with logical processor facility

EP 0348053 B1 · Applicant: AMDAHL CORPORATION

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

Why it's free to use

  • Filed June 1, 1989 and granted August 16, 1995. A European patent lasts at most 20 years from filing, so its term ended June 1, 2009.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by December 1, 2014.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJune 1, 1989
PublishedDecember 27, 1989
GrantedAugust 16, 1995
Term endedJune 1, 2009
Application numberEP 89305542
Classification (CPC)G06F15/177 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedJune 1, 1989PublishedDec 27, 1989Patent grantedAug 16, 1995Term endedJune 1, 2009

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