Multi-sheet glazing unit and method of making same
CA 2318245 C · Owner: Mccandless, Jack B. · Inventors: Boone, Bradley P.; Mccandless, Jack B.; Thompson, Albert E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In one embodiment a plurality of spaced sheet retaining members (34) is maintained on the legs (40, 42) of the spacer frame (28) between the glass sheets (24, 26). In another embodiment an inner sheet (32) has an edge mounted in an edge receiving member mounted between the legs (40 42) of the U-shaped , side of the spacer frame (28). The remaining edges of the inner sheet (32) are within the interior of the closed spacer frame (28) and spaced from the spacer frame (28) by one or more retaining members (34). In one embodiment the sheet , retaining members (34) each have a pair of flexible fingers (80 82). A sheet , (32) mounted between the fingers (80 82) is maintained spaced from the …
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 January 29, 1999 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2021.
- 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.