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Expired Canadian patentCanada

Architectural glass bending system

CA 1321069 C · Owner: Glasstech International, L.P. · Inventors: Mcmaster, Ronald A.; Mcmaster, Dexter H.; Nitschke, Norman C.

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

A glass bending and tempering apparatus is disclosed as including a pair of opposed bending platens for receiving a heated glass sheet to be bent therebetween. At least one of the bending platens is deformable and includes an actuator for deforming the platens from a planar shape to a bent shape to bend the heated glass sheet. Said one platen includes quench openings that move with said platen during the deformation of the platen and subsequently supply quenching gas to temper the bent glass sheet.

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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 August 10, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 10, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 5, 1988
GrantedAugust 10, 1993
Term endedAugust 10, 2010
Patent numberCA 1321069 C
Classification (IPC)C03B23/02 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 5, 1988Patent grantedAug 10, 1993Term endedAug 10, 2010

Sources & verification

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