Construction kit of wood components
CA 2230935 A1 · Owner: Hohenlohe-Waldenburg, Friedrich Karl · Inventors: Hohenlohe-Waldenburg, Friedrich Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a construction kit for building a structurecomprising wood members. A first wood member has an essentially rectangular cross section. It also has four longitudinal side faces and first and second interlocking means extending across the entire length of opposing side faces. The kit also includes a second wood member substantially similar to the first wood member wherein third interlocking means extend across an end of the second wood member and a third, wood member substantially similar to the first wood member but having a trapezoidal cross section. The kit also contains a fourth wood member substantally similar to the first wood member wherein a fourth …
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 March 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 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.