Pre-cast rectangular cobblestone
CA 2214295 C · Owner: Ciccarello, Charles · Inventors: Ciccarello, Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pre-cast cobblestone (10) is comprised of a concrete body (11) of substantially rectangular outline and having a top and bottom wall (13-14) and opposed side walls (15). The top wall (13) is embossed and the side walls (15) have longitudinally shaped flat side surfaces (15'). At least two of the side walls have spaced-apart protruding sections (16-17, 18-19) of irregular transverse cross-section which are aligned with straight intersecting outer parallel axes (12-12') of the side walls. The side walls (15) also have recessed sections (19) of irregular transverse cross-section defined between the protruding sections. When the cobblestones (10) are laid on a support surface in substantially …
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 August 29, 1997 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.