Manufactured wall elements using h-shaped fastening blades
CA 2099340 A1 · Owner: Schemmann, Gunter S. · Inventors: Kelly, Ralph B.; Schemmann, Gunter S.; Schemmann, Armin G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manufactured wall element, consisting of parallel vertical wall studs spaced apart from each other, resting on lower cross members, the rectangular space between the studs and lower cross members being filled by a plate preferably consisting of expanded polystyrene. The plate is firmly fastened to the parallel vertical wall studs and lower cross members, and upper cross members if, any, by H-shaped fastening blades in such a way that the legs of the H-shaped fasteners are firmly embedded in groves cut into the parallel vertical wall studs and lower cross members; while the blades, being the tapered arms of the H are holding, the polystyrene plate by resting in the groves cut along 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 June 28, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 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.