Retaining wall system
CA 1182295 A · Owner: Jagna Limited · Inventors: Risi, Angelo; Risi, Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to improved structural blocks particularly useful for retaining wall systems cribbing and other, similar structures wherein the upper or superior courses of the blocks are arranged in interlocking relation with the inferior courses and establish a selected uniform inclination from the lowermost course to the uppermost course achieved by providing projections that upstand from the top walls of the inferior blocks in a uniformly offset relation to the front facings and matching recesses included in the bottom walls of the superior, blocks.
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 February 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2002.
- 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.