Retaining wall system
CA 1290949 C · Owner: Glickman, Michael N · Inventors: Glickman, Michael N
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retaining wall system has a number of units placed on top of the other. The units are constructed to be capable of interengaging one another in a plurality of selected positions so that the angle of the face of the resultingwall to the vertical can be different at different heights. Preferably the uppersurface of each unit is substantially convex and the lower surface of each unit is a substantially complementary concave configuration. The blocks engage complementarily in more than one possible relative position and are shaped to resist being displaced therefrom by lateral forces.
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
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.