System of vegetation strips for protection of slopes against erosion
CA 2011472 C · Owner: Subic, Franc · Inventors: Subic, Franc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The subject of the present invention is a system of vegetation strips for protection of slopes against erosion. The system described in the present invention is made with wire netting strips fixed slantwise (at angles ranging between 20° and 40°) to the base wirenetting. Wire netting strips are fixed on the base wire netting at distances ranging from 1 m to 3 m. Bottom edges of the wire netting strips are fixed around the base wire netting with wire. Upper edges of the wire netting strips have to be fixed with wire to the points on the base wire netting. The "channel" so formed is filled with earth turf or similar, material to allow growth of the vegetation cover.
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 5, 1990 and granted September 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2012.
- 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.