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Expired European patentEurope

Electronic compass

EP 0363363 B1 · Applicant: WELLHAUSEN, Heinz

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Overview

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

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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.

Why it's free to use

  • Filed February 12, 1988 and granted September 11, 1991. A European patent lasts at most 20 years from filing, so its term ended February 12, 2008.
  • 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 August 12, 2013.
  • 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.
FiledFebruary 12, 1988
PublishedApril 18, 1990
GrantedSeptember 11, 1991
Term endedFebruary 12, 2008
Application numberEP 88901820
Classification (CPC)G01C17/28

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedFeb 12, 1988PublishedApril 18, 1990Patent grantedSep 11, 1991Term endedFeb 12, 2008

Sources & verification