A method and apparatus for flood irrigation
CA 2357006 A1 · Owner: Holloway, Rufus M. Jr. · Inventors: Holloway, Rufus M. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for flood irrigation using a pump (14) to transfer water (28) from a water collection area (32) to a flood plain (31) containing potted plants (27) and using gravity to return the water to the water collection area (11) after a resident time in the flood plain (31). A single pipe (40) functions as the conduit for the flow of water in both directions. The flood plain (31) and water collection area (32) may be lined with a water impervious material (33) to conserve the water (28) and to protect the ground water. A plurality of flood plains may be formed by positioning inflatable dikes (34) along the flood plains. An inflatable valve (36) positioned by a …
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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 8, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2021.
- 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.