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Expired European patentEurope

Ranging and Doppler measuring laser apparatus using pulse compression

EP 0120775 B1 · Applicant: THOMSON-CSF

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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.

Why it's free to use

  • Filed March 20, 1984 and granted May 11, 1988. A European patent lasts at most 20 years from filing, so its term ended March 20, 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 September 20, 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.
FiledMarch 20, 1984
PublishedOctober 3, 1984
GrantedMay 11, 1988
Term endedMarch 20, 2004
Application numberEP 84400561
Classification (CPC)G01S13/865 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMarch 20, 1984PublishedOct 3, 1984Patent grantedMay 11, 1988Term endedMarch 20, 2004

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