Seeding machine and method
CA 2136457 A1 · Owner: Edinger, Otmar · Inventors: Edinger, Otmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A planter or seeder in which the sowing elements are caused to move laterally as the seeder is drawn rectilinearly over the field so that the rows defined by the sowing elements or blades have an undulating or sinusoidal pattern. The sowing blades may be like casters or tailwheels which are caused to swivel from side to side.
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 23, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2016.
- 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.