Earth moving machine
CA 1256070 A · Owner: J. C. Bamford Excavators Limited · Inventors: Brocklebank, Norman; Cooper, Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An earth moving machine comprises a body having a ground engaging propulsion means and a base frame mounted on the ground engaging propulsion means, the base frame being movable relative to the ground engaging propulsion means about a first generally vertical axis a boom, extending outwardly of the body and mounted on the base frame for movement about a second axis transverse relative to the first axis the boom, having mounted at an outer end thereof for movement about a third axis also transverse to the vertical axis, a dipper arm an excavating implement, mounted at an outer end of the dipper arm for movement about a fourth axis also transverse relative to the first vertical axis a …
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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
- 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.