Conservation tillage implement, system and method
CA 2517914 C · Owner: Rozendaal, Jacobus A. · Inventors: Rozendaal, Jacobus A.; Gray, Geof; Averink, John Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conservation tillage implement having three or more rows of individual coulter wheel assemblies (50) laterally spaced apart and removably mounted on a cultivator frame, a coulter wheel assembly (50) in a given row being staggered with respect to the coulter wheel assemblies (50) in a longitudinally adjacent row. The coulter wheel assemblies (50) may be laterally adjustable and may be mounted to the cultivator frame using a mounting means that permits rotation about a vertical axis. The coulter wheel assemblies (50) may comprise a coil (51) spring having a horizontal spring axis to permit upward deflection in response to impact with an obstacle. Leveling attachments may optionally …
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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
- Filed March 5, 2004 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2026.
- 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.