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Expired European patentEurope

Improved arrangement for enhancing arc blow out and extinction in circuit breaking devices such as electric circuit breakers

EP 0095090 B1 · Applicant: CGE- COMPAGNIA GENERALE ELETTROMECCANICA S.p.A.

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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 May 11, 1983 and granted December 28, 1988. A European patent lasts at most 20 years from filing, so its term ended May 11, 2003.
  • 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 November 11, 2008.
  • 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.
FiledMay 11, 1983
PublishedNovember 30, 1983
GrantedDecember 28, 1988
Term endedMay 11, 2003
Application numberEP 83104625
Classification (CPC)H01H9/302 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMay 11, 1983PublishedNov 30, 1983Patent grantedDec 28, 1988Term endedMay 11, 2003

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

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