Skylight construction
CA 2005251 C · Owner: Sampson, Robert · Inventors: Sampson, Robert; Flanigan, Sean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skylight that may have a domed-type or flat-type glazing and which is adapted to fit within the opening of a roof or the like. The skylight includes a peripheral curb frame that may include a base frame and an operating leaf frame. A retainer is used for securing the skylight cover over the curb frame. The curb frame is preferably constructed of a rigid plastic material having high temperature resistant properties. A glazing cushioning member is disposed between the retainer and the curb frame for providing positioning and cushioning regarding the edge of the glazing. The glazing cushioning member also receives a securing bolt and is dimensioned to control the tightening of the retainer …
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 December 12, 1989 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2011.
- 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.