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Expired Canadian patentCanada

Read-only sequence control system

CA 1270548 C · Owner: Kuze, Yoshikazu · Inventors: Kuze, Yoshikazu

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the disclosure A read-only sequence control system comprises a control unit having an EPROM and a plurality of relays responsive to data outputs of the EPROM for controlling a machine. The system has a first sensor for detecting an entrance of work in the machine and a second sensor for detecting discharge of the entered work. When the second sensor does not detect the work at an end of working cycle the, control unit operates to stop the machine.

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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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
  • 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, 1987
GrantedJune 19, 1990
Term endedJune 19, 2007
Patent numberCA 1270548 C
Classification (IPC)G05B19/04

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedMay 27, 1987Patent grantedJune 19, 1990Term endedJune 19, 2007

Sources & verification

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