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Expired Canadian patentCanada

Invertible/reversible tool for use in a rotary food processing appliance

CA 1288419 C · Owner: Cuisinarts Corp. · Inventors: Williams, James E.

CIPO record

Overview

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

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Abstract From the Canadian patent

James E. Williams ABSTRACT OF THE DISCLOSURE, An invertible/reversible tool for use in a rotary food processing appliance is provided for performing predetermined processing operations in a first position and other predetermined operations in a second upside down position in a working bowl, which bowl contains a drive shaft for rotating the tool about a vertical axis in the bowl. The tool has an elongated upright hub with first and second sockets positioned on opposite ends adapted to engage the drive shaft for rotating the upright hub in different directions depending on which socket is engaging the drive. Raised ridge keyways extending vertically for at least more than half the length of …

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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 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 3, 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.
FiledDecember 23, 1987
GrantedSeptember 3, 1991
Term endedSeptember 3, 2008
Patent numberCA 1288419 C
Classification (IPC)B02C18/24 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedDec 23, 1987Patent grantedSep 3, 1991Term endedSep 3, 2008

Sources & verification

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