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Expired Canadian patentCanada

Numerical control system

CA 1184631 A · Owner: Fujitsu Fanuc Limited · Inventors: Miyata, Mitsuto; Kawamura, Hideaki; Nagamine, Tsuyoshi

CIPO record

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Abstract From the Canadian patent

A numerical control system for executing numerical control processing on the basis of a command program and for actuating a machine in accordance with the results of the processing steps to machine a workpiece in the manner specified by the instructions in the command program. There are prepared a plurality of system variables the values of which represent a variety of operational conditions on the side of the machine or on the side of a numerical control device. A user macro, having at least an identification and an instruction that employs the system variables, is stored beforehand in a memory. The command program is programmed to include a user macro call instruction. A prescribed user …

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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 March 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 27, 1981
GrantedMarch 26, 1985
Term endedMarch 26, 2002
Patent numberCA 1184631 A
Classification (IPC)B05B12/00 +1 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedMay 27, 1981Patent grantedMarch 26, 1985Term endedMarch 26, 2002

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