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Expired European patentEurope

Identification card comprising information in holographic form

EP 0047326 B1 · Applicant: International Business Machines Corporation

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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 August 21, 1980 and granted October 31, 1984. A European patent lasts at most 20 years from filing, so its term ended August 21, 2000.
  • 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 February 21, 2006.
  • 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.
FiledAugust 21, 1980
PublishedMarch 17, 1982
GrantedOctober 31, 1984
Term endedAugust 21, 2000
Application numberEP 80104962
Classification (CPC)G06K1/126 +2 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedAug 21, 1980PublishedMarch 17, 1982Patent grantedOct 31, 1984Term endedAug 21, 2000

Sources & verification