Block for constructing retaining wall
CA 2114677 C · Owner: Techo-Bloc Inc. · Inventors: Ciccarello, Charles; Correia, Horacio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A block for constructing a retaining wall and wherein the block is formed as an elongated rectangular block having opposed flat top and bottom surfaces a, front end wall and a rear end wall. An elongated connector receiving recess is provided in the top and bottom walls and extends along the longitudinal axis of the block and the recesses are disposed opposite one another in an offset and overlapping relationship. A connector element is received between juxtaposed recesses when blocks are stacked one on top of each other to form a retaining wall and wherein the connector element prevents transverse displacement of the blocks. The blocks are stacked with predetermined ones of the top or …
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 February 1, 1994 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 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.