Irrigation apparatus
CA 2116901 C · Owner: Fisher, Donald E. · Inventors: Fisher, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An irrigator has an annular reservoir, open radially inwardly. A wall on the inside of the reservoir closes the open inner side and contains a bed of soil for growing plants. Wicks trickle moisture from the reservoir into the soil bed. In preferred versions of the irrigator an impermeable plastic, insert is designed to fit into the centre of a scrap vehicle tire as the reservoir. When inserted forcefully into one side of the tire the tire is locked firmly , onto, the insert on one side to form a reservoir that has an opening between the opposite side of the tire and an upwardly tapered centre wall of the insert. When set into the ground plants may be grown in the centre of the insert with …
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 3, 1994 and granted January 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2016.
- 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.