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European application, no grantEurope

Device for testing the electro-acoustic transmission properties of telephone apparatus

EP 0392166 A2 · Applicant: QUANTE AG

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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 February 20, 1990 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 20, 2010.
  • 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 August 20, 2015.
  • 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.
FiledFebruary 20, 1990
PublishedOctober 17, 1990
GrantedNever granted
Term endedFebruary 20, 2010
Application numberEP 90103228
Classification (CPC)H04R29/001 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedFeb 20, 1990PublishedOct 17, 1990Term endedFeb 20, 2010

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.