Roof ventilation
CA 1073258 A · Owner: Romagno, Evo · Inventors: Romagno, Evo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a building having a mansard roof the side wall is provided with an elongated opening extending along it just beneath the roof edge, and special ventilator means are provided in the opening to allow the entry of air and to exclude precip-, itation. Preferred ventilator means include an elongated perforated plate, extending in one direction from one edge of the plate and diagonally across it, a shielding plate provided with a terminal connecting flange extending in the direction away from the perforated plate and perpendicular to it and extending in, the opposite direction from the other edge of said ventilator plate a support plate perpendicular to the ventilator 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
- Granted March 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 1997.
- 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.