Plant cultivation method and apparatus
CA 2126871 C · Owner: Perifleur Products Limited · Inventors: Sparkes, Alec Graham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described an apparatus for cultivating plants in which plants are supported by an array of parallel elements arranged about an elongate radiation sourse the array of, elements being rotatable about the axis of the source. The cylinders may also rotate about their own axes. Plants are applied to the cylinders by housing them in flexible bands and, winding the bands helically round the cylinders.
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 December 18, 1992 and granted February 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 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.
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.