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Expired European patentEurope

Axial locking of rotor blades for turbines and compressors

EP 0084491 B1 · Applicant: SOCIETE NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION, "S.N.E.C.M.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 January 13, 1983 and granted January 8, 1986. A European patent lasts at most 20 years from filing, so its term ended January 13, 2003.
  • 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 13, 2008.
  • 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 13, 1983
PublishedJuly 27, 1983
GrantedJanuary 8, 1986
Term endedJanuary 13, 2003
Application numberEP 83400080
Classification (CPC)F01D5/30 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJan 13, 1983PublishedJuly 27, 1983Patent grantedJan 8, 1986Term endedJan 13, 2003

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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