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Expired Canadian patentCanada

Large capacity pressure cooker

CA 1311932 C · Owner: Henny Penny Corporation · Inventors: Werts, Stephen D.; King, James D.

CIPO record

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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 large capacity pressure cooker in which an open-topped vat having an upper cooking zone and a lower cool zone for collecting contaminants is provided with a counterbalanced vertically moveable lid, operator-actuatable locking means having a single operating handle being provided to lock the lid in a closed and sealed position, including latching mechanism for maintaining the lid locking mechanism in the closed position when the vat is pressurized, the latching mechanism additionally serving to depressurize the vat if the latching mechanism is accidentally released. AES/sml/1757C

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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 December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 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.
FiledJuly 18, 1989
GrantedDecember 29, 1992
Term endedDecember 29, 2009
Patent numberCA 1311932 C
Classification (IPC)A47J27/08 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJuly 18, 1989Patent grantedDec 29, 1992Term endedDec 29, 2009

Sources & verification

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