Anchoring of outdoor traffic areas provided with cobblestones or paving stones
CA 2209787 A1 · Owner: F. Von Langsdorff Licensing Limited · Inventors: Schmitz, Michael; Barth, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anchoring of outdoor traffic areas provided with cobblestones or paving stones made of a plastic or natural stone material is cited in which the stones, are laid in a bed of sand and/or grit. The anchoring method provides for the stones to be further supported by an extensive supporting structure provided with openings and laid on top of the bed.
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 July 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2019.
- 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.