Grain stalk lifter
CA 2243017 A1 · Owner: Gemar, Leslie J. · Inventors: Gemar, Leslie J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grain stalk lifter attached to a conventional combine for use with grain stalks which are lying down. The grain stalk lifter includes a body having an upper lifting surface extending from a forward end upwards to a rear position above the cutting blades of the combine and further having a forward end provided with a skid for sliding on the ground surface. The body is connected through a spring to the blade guards of the combine to allow the skid to resiliently move upwards from the ground surface.
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 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2020.
- 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.