Stump cutter
CA 1309319 C · Owner: Mollberg, Russell E. Jr. · Inventors: Mollberg, Russell E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manually operated apparatus for eradicating tree stumps and the like comprising in combination:, a manually operated carrier member having a rotatable shaft; a cutting wheel means mounted on said shaft said cutting, wheel means comprising a hub capable of attaching to a rotatable shaft; said hub having at its lower end a plurality of slot means; cutting teeth mounted in said slot means projecting radially outwardly from said hub, said teeth having cutting faces facing in the direction of rotation; and, a cover plate mounted on said hub for maintaining said teeth in said hub.
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
- Granted October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 2009.
- 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.