Operable glass block window
CA 2063783 A1 · Owner: Sholton, Glenn · Inventors: Sholton, Bernard C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operable glass block window comprises a window frame sized for insertion into an opening in a structure. A window sash is provided which carries a plurality of glass blocks. The glass blocks are connected to one another to form a rigid panel and the panel is connected to the window sash to form an integral structure. Hinges or pivots are provided for connecting the sash to the frame to allow the sash to move relative to the 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 March 23, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 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.