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Expired European patentEurope

Method and arrangement for storing telecommunication messages in a private telecommunication exchange

EP 0304653 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 July 26, 1988 and granted April 27, 1994. A European patent lasts at most 20 years from filing, so its term ended July 26, 2008.
  • 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 January 26, 2014.
  • 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.
FiledJuly 26, 1988
PublishedMarch 1, 1989
GrantedApril 27, 1994
Term endedJuly 26, 2008
Application numberEP 88112053
Classification (CPC)H04M3/533

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJuly 26, 1988PublishedMarch 1, 1989Patent grantedApril 27, 1994Term endedJuly 26, 2008

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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