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Expired Canadian patentCanada

Header flotation system for an agricultural machine

CA 1287222 C · Owner: Ford New Holland, Inc. · Inventors: Deroo, Roger C.; Dedeyne, Alfons W.; Osselaere, Guy H. J.

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

A harvester having a mobile base unit adapted for movement over the ground, a transversely extending crop harvesting header supported from the base unit for allowing pivotal movement about a generally fore-and-aft axis of the machine, and a lateral flotation system for pivoting the header about the generally fore-and-aft axis is disclosed wherein the lateral flotation system includes a two way hydraulic actuator means extending between the header and the base unit for pivoting the header in the one or the other direction and positioning the header in a nominal position intermediate opposed extreme positions prior to starting flotation operation a pressure source coupled by a pair 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 August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 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.
FiledMay 1, 1987
GrantedAugust 6, 1991
Term endedAugust 6, 2008
Patent numberCA 1287222 C
Classification (IPC)A01D41/14

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 1, 1987Patent grantedAug 6, 1991Term endedAug 6, 2008

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