Ventilator
CA 1065670 A · Owner: Vallee, J. Louis L. · Inventors: Vallee, J. Louis L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ventilator for use with sheet metal roofing. The sheet metal panels covering the rood are lap-joined at the ridge of the rood and a ventilator opening is cut in the overlapped end portion of the sheet metal panels and in the underlying roof structure on either side of the ridge of the roof. The ventilator consists of a base member which is secured to the roof and a cover member which fits over the base member both members, being formed from sheet metal panels. The sheet metal panel from which the base member is formed has a centrally located cut-out conforming to the size of the opening in the roof structure and has its side edge portions folded upwards and inwards upon themselves to form …
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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 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.