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European application, no grantEurope

Method for supplying a call and line current without inductances, relay contacts or transformers

EP 0006584 A1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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.

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Why it's free to use

  • Filed June 21, 1979 and never granted as a European patent. Had it been granted, its 20-year term would have ended June 21, 1999.
  • 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 December 21, 2004.
  • 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.
FiledJune 21, 1979
PublishedJanuary 9, 1980
GrantedNever granted
Term endedJune 21, 1999
Application numberEP 79102060
Classification (CPC)H04Q3/00

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedJune 21, 1979PublishedJan 9, 1980Term endedJune 21, 1999

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.