Hollow block system
CA 2126155 C · Owner: Mercier, Camille · Inventors: Mercier, Camille
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To create decorative border arrangements on the ground, a kit of blocks and interconnecting pieces is provided. To assemble the blocks end to end into a row, the opposite end faces of the blocks and the two opposite sides of the interconnecting pieces comprise respective mutually mating interconnecting elements extending transversely of the row and being slidable in each other upon transversal displacement of an interconnecting piece between the confronting end faces of a pair of consecutive blocks thus, fastening the two confronting end faces together. When desired pickets are used to anchor the blocks to the ground to obtain a semi-permanent construction.
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 June 17, 1994 and granted May 4, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 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.