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Expired Canadian patentCanada

Aerator control mechanism

CA 2222953 C · Owner: Teiga, Michael Timothy · Inventors: Simon, Merlin Emmet; Teiga, Michael Timothy; Lamb, Mark Edward

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

A control mechanism for an aerator mechanism the control mechanism being, coupled with the engine for automatically slowing the engine when the aerator mechanism is shifted between transport and operating positions. The engine control mechanism includes a solenoid coupled with an operator engagable position control mechanism and an arm of an engine governor such that the governor will slow the engine when the position control mechanism is engaged to shift the aerator mechanism between transport and operating positions.

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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

  • Filed December 18, 1997 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2019.
  • 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 18, 1997
GrantedAugust 7, 2001
Term endedDecember 18, 2017
Patent numberCA 2222953 C
Classification (IPC)A01B45/02 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedDec 18, 1997Patent grantedAug 7, 2001Term endedDec 18, 2017

Sources & verification

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