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Expired Canadian patentCanada

Curtain wall panel supporting device

CA 1235277 A · Owner: Yoshida Kogyo K.K. · Inventors: Kaminaga, Hiromitsu

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 curtain wall panel supporting device in which batten members are connected to one side faces of right and left vertical frame members and upper and lower horizontal frame members through connection members having a heat insulating property to constitute a rectangular frame having concave grooves which are contiguous along the four inner peripheries of the frame and which are open in vertical and transverse directions with respect to the curtain wall plane and panel (6), is grippingly supported in those concave grooves through room-inside and-outside seal members to form spaces between the panel (6) and the concave grooves which spaces are contiguous along the four inner peripheries of 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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
  • 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 20, 1985
GrantedApril 19, 1988
Term endedApril 19, 2005
Patent numberCA 1235277 A
Classification (IPC)E04B2/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMarch 20, 1985Patent grantedApril 19, 1988Term endedApril 19, 2005

Sources & verification

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