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Expired Canadian patentCanada

Automotive machine for producing carriageways

CA 2548521 C · Owner: Mannebach, Thomas · Inventors: Haehn, Guenter; Buhr, Karsten; Busley, Peter

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 invention provides an automotive machine for producing carriageways by stabilizing insufficiently stable soils or by recycling road surfaces. The machine , comprises a machine chassis supported by a running gear a working drum , mounted to pivot in relation to the machine chassis the shaft of the working , drum , being mounted in pivoting arms and running transversely to the direction of travel, a combustion engine supported by the machine chassis with at least one output shaft for the drive power required for driving the working drum whereby at , least one mechanical power transmission device transfers the drive power from the output shaft to the working drum. The combustion …

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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 November 10, 2004 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 2004
GrantedJanuary 31, 2012
Term endedNovember 10, 2024
Patent numberCA 2548521 C
Classification (IPC)E01C23/08 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedNov 10, 2004Patent grantedJan 31, 2012Term endedNov 10, 2024

Sources & verification

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