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Expired Canadian patentCanada

Apparatus and method for communication between host cpu and remote terminal

CA 1283962 C · Owner: Hughes, Ron D. · Inventors: Rice, Kester B.; Youngblood, Gerald F.; Hughes, Ron D.

CIPO record

Overview

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

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Abstract From the Canadian patent

The invention relates a real time multiuser, time-share computer systems particularly adapted for running computer software written for individual personal computers, including software that requires the interactive exchange of high resolution computer graphics information. Data is transferred between the host computer and remote terminals over a very high speed serial data transmission line at a rate of, for example, 25 MHz. Fiber optic duplex cables connect a host controller with one or more remote terminals. One fiber optic cable carries the data from the host controller to the remote terminal and the other cable carries data from the remote terminal to the host controller. Specially …

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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 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
  • 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 18, 1987
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283962 C
Classification (IPC)G06F13/14 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 18, 1987Patent grantedMay 7, 1991Term endedMay 7, 2008

Sources & verification

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