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Expired Canadian patentCanada

Structural spacer glazing

CA 1265705 C · Owner: Francis, Geoffrey V. · Inventors: Francis, Geoffrey V.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A glass insulating sealed unit suitable for capless or stopless glazing comprises two spaced-apart glass plates and spacers to separate and join the glass plates arranged about the entire periphery of the plates and between the plates. The spacers are adapted for connection of the unit to adjoining support members in order to support and fix the unit. The preferred spaces each comprise a generally channel-shaped member having its elongate recess open along the edge of the unit. Structural sealant on two opposite sides of each spacer bond each of said sides to the adjacent inside surface of a respective glass plate. An elongate strip of compound providing both dessicant and vapour seal …

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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 February 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 4, 1984
GrantedFebruary 13, 1990
Term endedFebruary 13, 2007
Patent numberCA 1265705 C
Classification (IPC)E06B3/06

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedDec 4, 1984Patent grantedFeb 13, 1990Term endedFeb 13, 2007

Sources & verification

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