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Expired Canadian patentCanada

Computer systems suitable for effecting sequence controls and servo-controls

CA 1259417 A · Owner: Toshiba Kikai Kabushiki Kaisha · Inventors: Sasaki, Yoshinari; Oda, Etsuji; Kaneko, Toshihiko

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 a computer system suitable for effecting a sequence control and a servo-control, programs are prepared by using three types of parallel processing instructions consisting of an open instruction a close, instruction and a pause instruction. The open instruction is issued from a first program for parallelly processing a second program, The close instruction is issued from the first program to terminate the first or second program. The pause instruction is issued from the first program to stop execution of the first program for a definite interval. With this system it is not necessary to use system languages as programming languages, but such languages as BASIC and FORTRAN can be used.

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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 September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 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.
FiledAugust 19, 1986
GrantedSeptember 12, 1989
Term endedSeptember 12, 2006
Patent numberCA 1259417 A
Classification (IPC)G06F9/28 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedAug 19, 1986Patent grantedSep 12, 1989Term endedSep 12, 2006

Sources & verification

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