Roof vent
CA 2098670 A1 · Owner: Vagedes, Michael · Inventors: Vagedes, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Roof Vent, Abstract of the Disclosure, A passive roof vent is provided with a planar upper surface which includes channels on the sides and bottom of the panel to hold shingles. The side channels are stepped to permit two layers of shingles to be inserted over the top surface and provide a shingled appearance. This provides an aesthetically appealing roof vent which has an upper surface which blends in with a shingled roof.
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 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2015.
- 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.