Narrow row corn head with staggered height gathering chains
CA 2220757 A1 · Owner: Case Corporation · Inventors: Mcmillen, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved row crop header, suitable for mounting on a harvesting machine, for harvesting crops planted in rows. The improved row crop header has a plurality of row units mounted on a frame of the row crop header such that each row unit has two gatherers placed in corresponding offsetting planes. The adjacent gatherers of two adjacent row units are in offsetting planes to permit the overlap of the adjacent gatherers. This overlap of the adjacent gatherers permits the row units to by arranged closer together allowing the instant row crop header to harvest narrower crop rows than the existing corn heads. Also provided is an improved method for harvesting narrow crop rows by providing a row …
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 November 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2019.
- 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.