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Expired Canadian patentCanada

Nosepiece stopper for probe end, probing process in a melter oven by means of a probe having said stopper, and device of use in said process

CA 1286522 C · Owner: Daverio, Jean-Claude · Inventors: Daverio, Jean-Claude; Rocchi, Dominique

CIPO record

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

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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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.
FiledJune 11, 1987
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286522 C
Classification (IPC)C21B7/24

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 11, 1987Patent grantedJuly 23, 1991Term endedJuly 23, 2008

Sources & verification

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