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Expired Canadian patentCanada

Automatic tuyere puncher

CA 1307332 C · Owner: Seymour, Norman · Inventors: Pelletier, Albert; Dutton, Walter A.; Simms, Dale

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

27-, Abstract of the Disclosure:, A system for automatically or semi-automatically controlling the operation of a tuyere puncher comprises a distance measuring device which measures the distance of the puncher from a reference position, and a programmable device having a memory which may be used to store the position of each tuyere relative to such reference position, the capability of communicating with the distance measuring device to obtain the current puncher position input capability to read signals from external devices output capability to control indicating devices and the movement and punching operations of the puncher and the, calculating facility to determine the motion of the …

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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 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 15, 1988
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307332 C
Classification (IPC)F27B1/16 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 15, 1988Patent grantedSep 8, 1992Term endedSep 8, 2009

Sources & verification

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