Precast element for the construction of trenched structures and the process related thereto
CA 1046297 A · Owner: Alpina S.P.A. · Inventors: Zaretti, Luigi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the invention trenched constructions such, as tunnels, are realized by using precast reinforced concrete elements, generally of rectangular shape with, at least the external face provided by ribs of adequate dimentions for pouring, once the element is placed in the trench with vertical ribs thus forming channels with the ground, the concrete for lateral and foundation support.
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 January 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 1996.
- 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.