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Expired Canadian patentCanada

A structure for supporting trackway of a track following transportation system, in particular, a magnetic suspension railroad

CA 2021653 C · Owner: Raschbichler, Hans-Georg · Inventors: Raschbichler, Hans-Georg; Miller, Luitpold

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 structure for supporting a trackway of a magnetic suspension railroad includes at least one support at least, one equipment element having an operational surface extending in a track direction, and an arrangement for securing the equipment element on the support in a predetermined position. The securing arrangement includes a connecting body fixedly attached to the support and boss means projecting from the connecting body toward the equipment element and defining a first stop surface extending in a direction corresponding to a direction in which the operational surface extends and, cooperating with a second stop surface provided on the equipment element, when the equipment element is …

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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

  • Filed July 20, 1990 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2012.
  • 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 20, 1990
GrantedJuly 6, 1999
Term endedJuly 20, 2010
Patent numberCA 2021653 C
Classification (IPC)E01B25/10 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJuly 20, 1990Patent grantedJuly 6, 1999Term endedJuly 20, 2010

Sources & verification

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