Window unit
CA 1045463 A · Owner: Superseal Corporation · Inventors: Smits, Denis L.; Schmidt, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The border element of a double glazed window unit of the casement or awning type includes an elongate unitary body formed entirely of vinyl plastics; its cross-section defines: a glass-receiving base portion including a web and a pair of legs surrounding the outer marginal edges of the glass sheets; a first enclosed hollow portion contiguous with the opposite face of the web and defining a first insulation chamber; and a second enclosed hollow portion contiguous with one of the pair of legs and with the front wall of the first chamber to thereby define a second insulation chamber. A window unit is thus provided where the metallic components used for the support and the operation of the …
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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 January 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 1996.
- 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.