Navigational aid for agricultural equipment
CA 2188106 C · Owner: Kenneth Ross Parson · Inventors: Gray, Leonard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a navigational aid for aiding a person driving a vehicle in maintaining a desired distance from a line of reference, and particularly a navigational aid for use in navigating agricultural vehicles. The navigational aid is mounted adjacent a window in the cab of the vehicle. The navigational aid comprises an upright elongate member, fixing means for fixing the elongate member adjacent the window of the vehicle, a pointer slidably mounted on the elongate member for movement between the top and bottom ends such that the pointer may be positioned to lie in a line of sight between an eye of the person and the line of reference thereby enabling the person to …
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 October 17, 1996 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2018.
- 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.