Concrete form using face sheet as tension flange for stiffeners
CA 2372999 A1 · Owner: Mccracken, Robert · Inventors: Mccracken, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal concrete form panels having a face sheet to which is attached a rearwardly, extended perimeter flange. Stiffeners on the back side of the face panel are to the back side of, the face sheet and are arranged so that pressure on the first of the face sheet induces a tensile, force in the face stunt.
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 February 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2024.
- 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.