Ventilation system
CA 2338882 A1 · Owner: Richardson, Christopher · Inventors: Richardson, Christopher
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power assisted ventilation system for a conservatory of the type having a roof extending away from a wall or other supporting structure that is mountable, where the roof meets the wall of other supporting structure has a back plate mountable to the wall or to a glazing panel support means already on the wall and an apertured cover securable to the back plate.
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 28, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 28, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 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.