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Expired European patentEurope

Apparatus for the transmission of data signals via a TDM transmission line

EP 0281010 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 24, 1988 and granted February 7, 1996. A European patent lasts at most 20 years from filing, so its term ended February 24, 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 August 24, 2013.
  • 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 24, 1988
PublishedSeptember 7, 1988
GrantedFebruary 7, 1996
Term endedFebruary 24, 2008
Application numberEP 88102753
Classification (CPC)H04L5/22 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedFeb 24, 1988PublishedSep 7, 1988Patent grantedFeb 7, 1996Term endedFeb 24, 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

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