Assembly of wall elements
CA 1096580 A · Owner: Schaefer, Rudolf · Inventors: Schaefer, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An assembly comprises a plurality of individual wall elements having connection regions on adjacent wall elements at which these wall elements are to be connected the connection, regions comprising a frustoconical tongue on one element and a co-operating frustoconical groove on the other element clamp-, ing means being provided for holding the wall elements together.
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 March 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 1998.
- 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.