Window sash construction and method and apparatus for manufacture thereof
CA 2358346 A1 · Owner: Gillen, John H. · Inventors: Gillen, John H.; Bauman, Randall L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A homogeneous sash or fenestration unit is shown which may be made of a wide variety of materials and, holds a first and a second pane of glazing material in a parallel, spaced apart, relationship without the use of spacers or a preassembled glazing unit. A novel method and apparatus for making the sash or fenestration unit may use a double door horizontal booking press with fixed or adjustable molds.
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 October 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2023.
- 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.