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Expired European patentEurope

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EP 0255533 B1 · Applicant: ETERE, Raymond

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Overview

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

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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 January 23, 1987 and granted May 27, 1992. A European patent lasts at most 20 years from filing, so its term ended January 23, 2007.
  • 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 July 23, 2012.
  • 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.
FiledJanuary 23, 1987
PublishedFebruary 10, 1988
GrantedMay 27, 1992
Term endedJanuary 23, 2007
Application numberEP 87900855
Classification (CPC)E04D1/34 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJan 23, 1987PublishedFeb 10, 1988Patent grantedMay 27, 1992Term endedJan 23, 2007

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