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Expired Canadian patentCanada

Device at combine harvesters equipped with rotary straw chopper

CA 1294185 C · Owner: Bender, Arne · Inventors: Bender, Arne

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 device for combine harvesters equipped with impact straw cutters of the kind equipped with a cleaning device for separation of chaff from the grain and which rotary chopper is connected to the straw outlet of the combine harvester whereby, the chaff coming from the cleaning device and being transported by a flow of air is intended to be supplied to the rotary chopper. The rotary chopper is connected to the straw outlet of the combine harvester. The purpose of the invention is to provide a device by which the chaff is spread over the entire harvesting breadth of the combine harvester and is also efficiently admixed with the comminuted straw such that a continuous and even distribution can …

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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 January 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 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 10, 1987
GrantedJanuary 14, 1992
Term endedJanuary 14, 2009
Patent numberCA 1294185 C
Classification (IPC)A01D41/12 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 10, 1987Patent grantedJan 14, 1992Term endedJan 14, 2009

Sources & verification

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