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Expired European patentEurope

System and method for testing digital electronic circuits

EP 0344271 B1 · Applicant: AMPEX SYSTEMS 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.

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Why it's free to use

  • Filed October 24, 1988 and granted April 19, 1995. A European patent lasts at most 20 years from filing, so its term ended October 24, 2008.
  • 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 24, 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.
FiledOctober 24, 1988
PublishedDecember 6, 1989
GrantedApril 19, 1995
Term endedOctober 24, 2008
Application numberEP 89900437
Classification (CPC)G06F11/277

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedOct 24, 1988PublishedDec 6, 1989Patent grantedApril 19, 1995Term endedOct 24, 2008

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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