Precast concrete wall system
CA 2350295 C · Owner: Pulte, William J. · Inventors: Wrass, Lawrence J.; Broad, Robert P.; Pulte, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is for an adjustable casting tool for forming various sized precast concrete wall sections and reduces or eliminates large inventories of precast concrete wall sections having a wide variety of dimensions. A base is disposed generally in a horizontal plane and has an upper surface. A pair of opposing sidewalls are disposed proximate the upper surface. Each of the sidewalls has a first position in which the sidewall is located substantially in a vertical plane. First and second opposing bulkheads are disposed proximate the upper surface each having a , respective first position in which the bulkhead is located substantially in a vertical plane. The bulkheads …
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 12, 2001 and granted May 24, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2023.
- 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.