Window assembly and method of making same
CA 2093832 C · Owner: Baier, Bruce A. · Inventors: Baier, Bruce A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A window frame member is substantially premanufactured leaving only cutting the mortise and tenon ends of the rail and stile frame members along with cutting the glass stop to the required width. The pre-manufactured frame members include a continuous groove to receive removable glazing panel retention clips. A breather channel opening is cut in the mortise end of the stile frame member avoiding a separate drilling operation. The window frame is versatile and will accommodate multiple window accessories including a muntin grid and light control means such as a blind between two window units. An energy transmittance control system provides a balanced effective control of ultraviolet and near …
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 April 13, 1993 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 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.