Prefabricated portable indoor/outdoor natural grass sportsfield
CA 2102460 A1 · Owner: Probst, Christian Patrick · Inventors: Izatt, David Russell; Izatt, James Paterson; Probst, Christian Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A prefabricated portable indoor/outdoor system for rapidly removing excess moisture from a planted area surface such as a sportsfield or sports area including a sub-surface multistrata base for drainage and irrigation combined and adpated for propagating a planted surface requiring controlled irrigation and/or draining of excessive moisture. IRRIGATION supply consists of a small diameter duct superimposed into a larger duct at right angles to each other. Ports through the smaller duct are spaced directly into the larger duct below the level of smaller duct. The upper smaller duct is a pressure duct conducting water. During irrigation water falls from the upper small pressure duct ports into …
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 November 4, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2015.
- 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.