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Expired Canadian patentCanada

Corner for spacer strip of sealed window units

CA 1247938 A · Owner: 8337934 Canada Ltd. · Inventors: Davies, Lawrence W.

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

19 -, "CORNER MEMBER AND SPACER STRIP FOR SEALED WINDOW UNITS" ABSTRACT OF THE DISCLOSURE, A corner member for locating at right angles spacer strips of a sealed window unit includes a pair of legs at right angles each for extending into an adjacent end of a respective one of the strips. The strips are of the type formed from glass fiber reinforced resin pultrusion defining a slot along the inwardly facing surface. To prevent the slot opening when the leg is inserted into the hollow interior of the strip, the leg includes a pair of laterally extending projections for engaging the strip in compression fit only at the junctions between the sides and the surface of the strip opposite to 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 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 12, 1984
GrantedJanuary 3, 1989
Term endedJanuary 3, 2006
Patent numberCA 1247938 A
Classification (IPC)E06B3/24 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedJuly 12, 1984Patent grantedJan 3, 1989Term endedJan 3, 2006

Sources & verification

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