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European application, no grantEurope

Circuit for generating very low currents

EP 0579652 A1 · Applicant: DEUTSCHE THOMSON-BRANDT GMBH

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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 April 6, 1992 and never granted as a European patent. Had it been granted, its 20-year term would have ended April 6, 2012.
  • 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 6, 2017.
  • 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 6, 1992
PublishedJanuary 26, 1994
GrantedNever granted
Term endedApril 6, 2012
Application numberEP 92907750
Classification (CPC)G05F3/265

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedApril 6, 1992PublishedJan 26, 1994Term endedApril 6, 2012

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