Zero-till drill
CA 1251997 A · Owner: Degelman Industries Ltd. · Inventors: Degelman, Wilfred; Cadamia, Valentine T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to a novel zerotill seed drill which has a shortened wheel base and can thus closely follow the contours of a field which is being seeded, is capable of being raised and lowered at the beginning and end of each pass on the field and has, adjustable level and packer wheel weight capability. The invention is directed to a zero-till drill apparatus which is adapted for optionally carrying a Coulter disk at least one seed drill, and a holder for carrying seeds, the apparatus being mounted on transport wheels. The apparatus includes means for raising at least one of the transport wheels off the ground while the Coulter disk and/or drill are on the the ground in …
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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
- Granted April 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 4, 2006.
- 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.