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Expired Canadian patentCanada

Playground slide

CA 1282440 C · Owner: Ahrens, Paul Wesley · Inventors: Ahrens, Paul Wesley

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 spiral slide includes interconnected bedway sections each of which are hollow and include as an integral part of the section body a sleeve telescopically engaging a ground support post. Fasteners interconnect the end-to-end bedway sections and are disposed on the interior of these sections and are accessible through capped openings. Fasteners may be formed as an integral part of the end wall. A fastener recess may be formed on the bottom side of the bedway section by the bottom wall converging upwardly towards the top wall to form a connecting flange with the fastener recess being between the flange and the bottom wall.

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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 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 27, 1987
GrantedApril 2, 1991
Term endedApril 2, 2008
Patent numberCA 1282440 C
Classification (IPC)A63G21/02 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJuly 27, 1987Patent grantedApril 2, 1991Term endedApril 2, 2008

Sources & verification

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