Mulching apparatus
CA 2055976 A1 · Owner: Humphreys, James Robert · Inventors: Humphreys, James Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mulcher for use in silviculture adapted to be mounted on or attached behind an off-road vehicle for mulching two or more rows prior to the planting of seedlings, said mulcher having a triangular frame fastening means, tillers, tiller motors tiller teeth and, means for raising and lowering said frame relative to the ground, wherein the fastening means for connecting the triangular frame to an off road vehicle is mounted on the apex of the triangular frame, opposite the apex of the triangular frame, tiller motors mounted on the base of the triangular frame are connected to said tiller heads for rotating said tiller heads in a clockwise direction relative to the base of the triangular frame …
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 November 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2013.
- 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.