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Expired European patentEurope

Method and device for data transfer control between the functional units of a data processor

EP 0059237 B1 · Applicant: COMPUTER GESELLSCHAFT KONSTANZ MBH

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Overview

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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 October 15, 1981 and granted April 2, 1986. A European patent lasts at most 20 years from filing, so its term ended October 15, 2001.
  • 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 April 15, 2007.
  • 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.
FiledOctober 15, 1981
PublishedSeptember 8, 1982
GrantedApril 2, 1986
Term endedOctober 15, 2001
Application numberEP 81108373
Classification (CPC)G06F13/364

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedOct 15, 1981PublishedSep 8, 1982Patent grantedApril 2, 1986Term endedOct 15, 2001

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