Underwater mining machine
CA 2285630 A1 · Owner: De Pretto, Roberto · Inventors: De Pretto, Roberto; Jackson, Mark Lawrence; Richardson, Kevin David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An underwater mining machine (10) includes a chassis (12) mounted on a powered drive arrangement (14) for driving the chassis on an underwater surface, the chassis (12) having a front end and a rear end and being adapted to be maneouvrable and driven in at least a forward direction, a rotatable cutting drum (22) secured to a boom (24) which is attached to a cradle (92) mounted on the chassis and, material gathering means (46) adapted to gather material which has been excavated or broken up by the cutting drum (22).
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 March 24, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2020.
- 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.