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Expired Canadian patentCanada

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CA 1112347 A · Owner: Magnetic Controls Company · Inventors: Buck, Josef J.

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

A patching module having an improved switching and monitor feature for use in a patch unit assembly. The monitor feature includes a monitor plug with monitor elements capable of directly monitoring selected leads of the circuit within the module without drawing any power from such circuit. Each module is provided with appropriate connections for an independent power source.

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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 November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 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.
FiledDecember 1, 1978
GrantedNovember 10, 1981
Term endedNovember 10, 1998
Patent numberCA 1112347 A
Classification (IPC)H05K7/10 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedDec 1, 1978Patent grantedNov 10, 1981Term endedNov 10, 1998

Sources & verification

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