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Expired Canadian patentCanada

Profiled sheet material

CA 1250726 A · Owner: Wilson Double-Deck Trailers Limited · Inventors: Wilson, Fredrick G.

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

The profiled sheet material is formed into side panels and floor or deck panels for use for example in the manufacture of high-sided lorries trailers and, containers One object of the invention is to provide a profiled side which will present a substantially smooth outer surface and another is to provide a floor or deck of shallow depth but relatively high strength. The profiled sheet material (10) has a plurality of parallel deformations (11) which in cross section are substantially triangular with the base (12) of each deformation spaced from the body (3) of the sheet The, apex (14) of each deformation is formed by closely abutting curved faces of the sheet material (10) where the body 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 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 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.
FiledFebruary 22, 1985
GrantedMarch 7, 1989
Term endedMarch 7, 2006
Patent numberCA 1250726 A
Classification (IPC)E04B5/02 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedFeb 22, 1985Patent grantedMarch 7, 1989Term endedMarch 7, 2006

Sources & verification

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