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Expired Canadian patentCanada

Multiplexing

CA 1095193 A · Owner: Codex Corporation · Inventors: Vander Mey, James E.

CIPO record

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Abstract From the Canadian patent

A data transmission system is described wherein data in a plurality of constituent streams are received at a multiplexer processed, to form a single composite stream comprising time slots each carrying data from one constituent stream, transmitted in the composite stream over a communication link, and demultiplexed in a demultiplexer receiving the composite stream at the far end of the link to recover the original plurality of constituent streams in separate form. The system implements a protocol according to which a plurality of queues each associated with one of the, constituent streams and arranged and connected to receive and store data therefrom, are serviced by a sequence of time …

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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 February 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 5, 1977
GrantedFebruary 3, 1981
Term endedFebruary 3, 1998
Patent numberCA 1095193 A
Classification (IPC)H04J3/02 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedJuly 5, 1977Patent grantedFeb 3, 1981Term endedFeb 3, 1998

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