Swath conditioner and mover
CA 2280567 C · Owner: Mccrea, David Gary · Inventors: Mccrea, Thomas Edward; Mccrea, David Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A swath conditioner and mover comprises a frame adapted to travel in a forward direction along the ground with a lower crimping roller rotatably mounted to the frame such that the axis of rotation thereof is at an angle less than ninety degrees to the direction of travel. The lower crimping roller comprises a rough surface suitable for picking a swath from the ground. An upper crimping roller cooperates with the lower crimping roller and is rotatably mounted to the frame above the lower crimping roller. A drive rotates the upper and lower crimping rollers such that the bottom rough surface of the lower crimping roller moves generally forward. The vertical position of the lower crimping …
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 August 18, 1999 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2021.
- 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.