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Expired Canadian patentCanada

Panel construction

CA 1089618 A · Owner: Hunter Douglas Canada Ltd. · Inventors: Brugman, Johannes A. H.

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 panel construction e.g. for wall or ceiling, in which a, plurality of mutually parallel elongate support members for, example, of inverted T-shaped cross-section have two, parallel free longitudinal edges spaced apart from one another and elongate support elements which may for example, be flat or channel section are carried by these support members. Clamps engage around the longitudinal edges of the support members and press the support elements against the support members and carry panel holding means which support a plurality of panels. - 1a -

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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 November 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1978
GrantedNovember 18, 1980
Term endedNovember 18, 1997
Patent numberCA 1089618 A
Classification (IPC)E04B9/36 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 31, 1978Patent grantedNov 18, 1980Term endedNov 18, 1997

Sources & verification

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