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Expired Canadian patentCanada

Window assembly and method of making same

CA 1294770 C · Owner: Dor-Seal Inc. · Inventors: Drennan, Craig

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A method of manufacturing a sealed triple glazed window unit which incorporates a matrix pane which has plated came members which will not tarnish after assembly of the sealed window unit. The first step in the method is to assemble a matrix pane which consists of a plurality of came members which secure adjacent sections of glass in an edge-to-edge relationship and extend about the perimeter of the matrix pane. The assembled matrix pane is then plated to coat the exposed surfaces of the came members. The plated matrix pane is then heated to a temperature which is sufficient and for a period of time which is sufficient to cause any liquid which is trapped in the came member to evaporate to …

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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 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 1, 1989
GrantedJanuary 28, 1992
Term endedJanuary 28, 2009
Patent numberCA 1294770 C
Classification (IPC)E06B3/64 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedSep 1, 1989Patent grantedJan 28, 1992Term endedJan 28, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.