Expired European patentEurope
Packet data switch for transferring data packets from one or a plurality of incoming data links to one or a plurality of outgoing data links
EP 0335848 B1 · Applicant: TELEFONAKTIEBOLAGET L M ERICSSON
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 February 27, 1989 and granted October 13, 1993. A European patent lasts at most 20 years from filing, so its term ended February 27, 2009.
- 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 27, 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.
FiledFebruary 27, 1989
PublishedOctober 4, 1989
GrantedOctober 13, 1993
Term endedFebruary 27, 2009
Application numberEP 89850071
Classification (CPC)H04L12/56 +1 more
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.