Block retaining wall with attached facing panels
CA 2244348 C · Owner: Perkins, Garry R. · Inventors: Perkins, Garry R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inexpensive, yet beautiful retaining wall may be formed with architecturally pleasing coordinating or, matching materials such as marble granite, stone, metal, or the like. Architecturally pleasing thin decorative, facing panels are attached to retaining wall blocks which have hollow spaces to be filled with gravel or the like. The retaining wall is formed from several rows of such retaining wall blocks with the blocks in an upper row stacked upon the blocks in an adjacent lower row below the upper row and with the bottom edges of the upper row blocks being supported on adjacent lower row blocks. Decorative facing panels are provided which are substantially smaller in size than the …
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 July 30, 1998 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2020.
- 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.