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Expired Canadian patentCanada

Interior corner construction for wallboard, ceiling and partition panel assemblies, and backer clips therefor

CA 1201566 A · Owner: Weinar, Roger N. · Inventors: Weinar, Roger N.

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 backer clip, a plurality of which may be used to replace a second framing member normally employed for interior corner constructions of wallboard ceiling and, partition panel assemblies and suitable for installation on, a framing member is of a continuous length of wire bent to shape so that an interior portion (or exterior portions) thereof is (are) substantially in a single plane and the, corresponding exterior portions (or interior portion) are (is) in a substantially parallel plane when the clip is installed on a framing member,with such interior and exterior portions being connected by legs in a plane at about right angles to such other planes when the clip is installed and, being of …

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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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 24, 1983
GrantedMarch 11, 1986
Term endedMarch 11, 2003
Patent numberCA 1201566 A
Classification (IPC)E04F13/08 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 24, 1983Patent grantedMarch 11, 1986Term endedMarch 11, 2003

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