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Expired Canadian patentCanada

Multifurrow reversible semi-mounted ploughs

CA 1331430 C · Owner: S.A.R.L. Ets Gregoire-Besson Et Cie · Inventors: Besson, Alphonse

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

The present invention relates to multifurrow reversible semi-mounted plough comprising a large number of plough-bodies fixed on a beam. According to the invention, the beam is constituted by at least two elements connected two by two via an articulation about an axis , horizontal in the working position of the plough with, means for locking said articulation or articulations the, articulation being preferably provided in the central portion of the beam substantially in line with the wheel support group of this central portion. The invention allows having a ploughing depth of the ploughshares almost equal on all the ploughshares in spite of the large width of the plough.

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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 16, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 16, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 28, 1988
GrantedAugust 16, 1994
Term endedAugust 16, 2011
Patent numberCA 1331430 C
Classification (IPC)A01B3/46 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJune 28, 1988Patent grantedAug 16, 1994Term endedAug 16, 2011

Sources & verification

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