Soil cultivating machines
CA 1099563 A · Owner: Van Der Lely (C.) N.V. · Inventors: Bom, Cornelis J.G.; Van Der Lely, Ary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Soil cultivating machines or implements are disclosed of the kind which comprise a frame portion that extends transverse to the intended direction of operative travel of the machine at least one soil working member, arranged to rotate about an upwardly extending axis in one direction and at least one soil working member arranged to rotate about an upwardly extending axis in the opposite direction, the soil working members being carried by the frame portion and each of them being provided with at least one cultivating tool. The axis of rotation of each soil working member is substantially vertically disposed during use of the machine and each cultivating tool comprises a substantially …
Read the whole patent
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 April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.