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Expired European patentEurope

Method and apparatus for locating the position of a self-propelled machine moving on an immersed structure

EP 0011574 B1 · Applicant: SOTRAPLEX Société Anonyme

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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.

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Why it's free to use

  • Filed November 16, 1979 and granted April 13, 1983. A European patent lasts at most 20 years from filing, so its term ended November 16, 1999.
  • 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 May 16, 2005.
  • 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.
FiledNovember 16, 1979
PublishedMay 28, 1980
GrantedApril 13, 1983
Term endedNovember 16, 1999
Application numberEP 79400879
Classification (CPC)G01S15/88 +2 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedNov 16, 1979PublishedMay 28, 1980Patent grantedApril 13, 1983Term endedNov 16, 1999

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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