Harvesting system and method
CA 2218901 C · Owner: Bob Mcleod Inc. · Inventors: Mcleod, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A harvesting method which removes chaff and weed seeds from the field with the harvested grain, and separates the chaff grain leavings and weedseeds from the grain in a stationary yard plant. The chaff grain leavings and weed, seeds are compacted and crushed in a mill for use as animal feed. Simplified harvesters have augmented holding tanks one version of which can be attached to(and detached from) existing farm tractors. A specific integrated yard plant separates and cleans harvested grain and compacts and crushes chaff grain, leavings and weed seeds.
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
- Filed July 8, 1996 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2018.
- 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.