Self-supporting field marker
CA 2298369 C · Owner: Nevin, Jim · Inventors: Nevin, Jim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
field marker arranged for mounting on an agricultural implement at one side thereof includes a marker arm including a marker disk movable between a deployed position extending outwardly of the implement to one side thereof and a, retracted position. The marker arm has an inner arm portion and an outer arm portion both of which are formed from two parallel beams with the disk on the outer, end of a rear one of the beams. The inner arm portion is pivotal about a first horizontal axis and is supported on a ground wheel spaced outwardly to allow the, marker arm to move upwardly and downwardly relative to the implement. The outer, arm portion is mounted on the outer end of the inner arm …
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 February 14, 2000 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2022.
- 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.