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Expired European patentEurope

Anti-pick cylinder lock

EP 0452297 B1 · Applicant: GRUNDMANN SCHLIESSTECHNIK GESELLSCHAFT m.b.H.

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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 April 8, 1991 and granted November 18, 1993. A European patent lasts at most 20 years from filing, so its term ended April 8, 2011.
  • 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 October 8, 2016.
  • 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.
FiledApril 8, 1991
PublishedOctober 16, 1991
GrantedNovember 18, 1993
Term endedApril 8, 2011
Application numberEP 91890070
Classification (CPC)E05B27/0021

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedApril 8, 1991PublishedOct 16, 1991Patent grantedNov 18, 1993Term endedApril 8, 2011

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.