Module and method for constructing sealing load-bearing retaining wall
CA 2005083 A1 · Owner: Smith, Peter J. · Inventors: Smith, Peter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monolithic sealing load-bearing retaining wall is constructed using precast concrete bin-type modules stacked in rows. Each module has a front wall a, partition wall spaced from the front wall at least two, spaced apart front connecting walls extending between the front wall and the partition wall, at least two spaced apart rear connecting walls extending from the rear of the partition wall, and stabilizing means extending between the rear connecting walls. The partition wall preferably is formed integrally with the front connecting walls which provide openings for horizontally extending reinforcing members in each row of modules. The front walls and partition walls of the stacked modules …
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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 December 11, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2011.
- 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.