Expired Canadian patentCanada
Tree felling head with combination tree accumulator and tree abutment
CA 2083365 C · Owner: Logging Development Corporation · Inventors: Hamilton, Douglas D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A felling head having a combination tree accumulator and abutment apparatus which eliminates the need for additional grapple arms to secure accumulated trees thus simplifying and lightening the felling head.
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 19, 1992 and granted November 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1992
GrantedNovember 17, 1998
Term endedNovember 19, 2012
Patent numberCA 2083365 C
Classification (IPC)A01G23/08
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.