Expired Canadian patentCanada
Multiple glazing, process for obtaining same, and process implementation means
CA 1328801 C · Owner: Saint-Gobain Vitrage · Inventors: Dewitte, Philippe; Canaud, Michel
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
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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
- Granted April 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 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.
FiledFebruary 19, 1987
GrantedApril 26, 1994
Term endedApril 26, 2011
Patent numberCA 1328801 C
Classification (IPC)E06B3/66 +2 more
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.