Patent Yard Sign in
Expired European patentEurope

Impact-driven key arrangement

EP 0128883 B1 · Applicant: Näslund, Rolf

EPO PDF

Overview

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

Read the whole patent

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 April 12, 1984 and granted July 12, 1989. A European patent lasts at most 20 years from filing, so its term ended April 12, 2004.
  • 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 12, 2009.
  • 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 12, 1984
PublishedDecember 19, 1984
GrantedJuly 12, 1989
Term endedApril 12, 2004
Application numberEP 84850120
Classification (CPC)B25B19/00

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedApril 12, 1984PublishedDec 19, 1984Patent grantedJuly 12, 1989Term endedApril 12, 2004

Sources & verification