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Expired Canadian patentCanada

Arrangement for path selection in a communications network

CA 1253938 A · Owner: Katzeff, Kurt · Inventors: Katzeff, Kurt

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In an integrated network (K) for communication are connected terminals (T1-T4) and computers (P1-P4). Each terminal is capable of being linked to the desired computer which performs the desired operating task entered via the terminal. When it is activated the, terminal will cause linking to occur with a piece of path selection equipment (RI, RS, RD, RE) and the transmission to the latter of a definition of the type of work that it is wished to have carried out from the terminal. Depending on the nature of the aforementioned definition received, the path selection equipment will send back to the terminal information relating to the traffic route to be allocated in the network to the terminal …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 16, 1984
GrantedMay 9, 1989
Term endedMay 9, 2006
Patent numberCA 1253938 A
Classification (IPC)H04M3/42

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedNov 16, 1984Patent grantedMay 9, 1989Term endedMay 9, 2006

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.