Skylight construction
CA 2061807 A1 · Owner: Sampson, Robert · Inventors: Flanigan, Sean; Sampson, Robert; Sampson, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skylight construction having a wooden base frame extending about a roof opening and secured thereto. The skylight construction is illustrated as a step flash skylight including a rigid plastic curb frame having a base frame and overlying sash frame. A retainer is provided for supporting glazing plates over the sash frame. The PVC base frame is firmly secured to the wooden base frame by interlocking therewith. The PVC base frame has a peripherally disposed counterflashing piece extending downwardly therefrom and having flashing seal means disposed intermediate the counterflashing piece and the wooden base frame.
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 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2014.
- 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.