Expired European patentEurope
Switch device with insulating barrier introduced between the contacts when they open and with arc cutting means between the barrier and an insulating wall
EP 0118333 B1 · Applicant: TELEMECANIQUE
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 January 31, 1984 and granted September 24, 1986. A European patent lasts at most 20 years from filing, so its term ended January 31, 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 July 31, 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.
FiledJanuary 31, 1984
PublishedSeptember 12, 1984
GrantedSeptember 24, 1986
Term endedJanuary 31, 2004
Application numberEP 84400204
Classification (CPC)H01H9/32
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.