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Expired Canadian patentCanada

Composite section for windows and method for the manufacture thereof

CA 1307976 C · Owner: Gasser, Erwin · Inventors: Gasser, Erwin

CIPO record

Overview

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

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Abstract From the Canadian patent

The invention relates to composite sections consisting of a metallic part which is connected through an intermediate layer of heat-insulating parts to a non-metallic part. The heat-insulating part is connected rigidly to the non-metallic part but is connected to the metallic part by positive means and pressure, the pressure providing - while the positively connected parts are approaching each other at right, angles to the longitudinal extent thereof by plastic, deformation of the webs or projections within the corresponding recesses in the heat-insulating part - a clamping action with limited contact areas whereby, limited longitudinal and/or transverse displacements are possible at …

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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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.
FiledMarch 11, 1987
GrantedSeptember 29, 1992
Term endedSeptember 29, 2009
Patent numberCA 1307976 C
Classification (IPC)E06B1/32 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMarch 11, 1987Patent grantedSep 29, 1992Term endedSep 29, 2009

Sources & verification

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