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Expired Canadian patentCanada

Combine-harvester provided with sensing means

CA 1045495 A · Owner: Rds (Agricultural) Limited · Inventors: Brown, James A.

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 combine-harvester is provided with three acoustic detectors which are connected to moistening and display means for inspection by the driver of the combine-harvester. The first detector is mounted at the rear end of the straw walkers and extends across the whole width of the straw walkers so as to detect grain loss from the straw walkers the second detector, is mounted at the rear end of the sieves and extends across the whole width of the sieves to detect grain loss from the sieves and the third detector is mounted in the air flow path between the straw discharge from the straw walkers and the chaff discharge from the sieves and extends substantially across the the air flow from the fans …

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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 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 2, 1979
Term endedJanuary 2, 1996
Patent numberCA 1045495 A
Classification (IPC)A01D41/02 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 2, 1979Term endedJan 2, 1996

Sources & verification

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