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Expired European patentEurope

Hydraulic system with a double section telescopic piston for the movement of loads in unstable conditions

EP 0055697 B1 · Applicant: SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE S.p.A.

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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 December 22, 1981 and granted July 8, 1987. A European patent lasts at most 20 years from filing, so its term ended December 22, 2001.
  • 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 22, 2007.
  • 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 22, 1981
PublishedJuly 7, 1982
GrantedJuly 8, 1987
Term endedDecember 22, 2001
Application numberEP 81830251
Classification (CPC)F15B15/16

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedDec 22, 1981PublishedJuly 7, 1982Patent grantedJuly 8, 1987Term endedDec 22, 2001

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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