Portable stump remover
CA 2074090 A1 · Owner: Hooser, Steven M. · Inventors: Hooser, Steven M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable self-contained stump remover, that may be hand held by the operator, has an engine (21) driven cutting device whose cutting teeth (55) rotate through a circular path at least a part of which lies below a lower base surface (17a) that engages and rests on a tree stump when the stump remover is placed on the stump by the operator. By manually moving the stump remover across the stump so that the rotating cutting teeth (55) follow the base surface (17a), which surface serves to support guide and stabilize, the stump remover the stump will be cut away and ground down to the cutting depth determined by the extent to which the cutting teeth (55) project below the base surface.
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 January 16, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 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.