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Expired European patentEurope

Twin slab

EP 0673341 B1 · Applicant: Steuler-Industriewerke GmbH

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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 December 16, 1993 and granted May 28, 1997. A European patent lasts at most 20 years from filing, so its term ended December 16, 2013.
  • 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 June 16, 2019.
  • 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.
FiledDecember 16, 1993
PublishedSeptember 27, 1995
GrantedMay 28, 1997
Term endedDecember 16, 2013
Application numberEP 94902779
Classification (CPC)E04C2/34 +1 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedDec 16, 1993PublishedSep 27, 1995Patent grantedMay 28, 1997Term endedDec 16, 2013

Sources & verification