A timber harvester
CA 2055472 C · Owner: Ketonen, Lauri Kalervo · Inventors: Ketonen, Lauri Kalervo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A timber harvester disclosed includes a frame two, feed tracks jointed opposite one another a front stripping, blade, and a rear stripping blade. A frame of the feed track is carried on jointed trapezoid arms. A rear stripping blade is located on the frame of one of the feed tracks and is jointed essentially on the line of the compressive force between the feed track and a tree when, seen from the direction of the timber feed.
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 May 30, 1990 and granted August 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2012.
- 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.