Device for erecting walls or ceilings, especially in exhibition constructions
CA 2091121 C · Owner: Harsch, Gerald · Inventors: Harsch, Gerald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for erecting walls and/or ceilings includes a support shaped-section evincing approximately cross-ssctionally T-shaped webs to which at least one beam for wall- and/or ceiling segments can be detachably affixed, further a clamping lock detachable fastened inside the hollow beam and comprising a central retaining element and two spring-steel, lateral retaining elements mounted symmetrically relative to said central retaining element. The retaining elements engage adjacent and undercut channels formed by the webs and are tightened against two adjacent webs of the support shaped-section by a rotationally actuated transverse, tightening system crossing the three retaining elements …
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 5, 1993 and granted April 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2015.
- 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.