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Expired Canadian patentCanada

Machine for cutting off or planing off road surfaces

CA 1234975 A · Owner: Wirtgen, Reinhard · Inventors: Wirtgen, Reinhard

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

In a machine for cutting off or planing off road surfaces, having a chassis with an independent drive motor, a steerable wheeled and/or tracked running mechanism and a cutting or planing device which is fixed in a vertically adjustable manner to the chassis which, cutting or planing device contains at least one planing or cutting tool, at least two planing or cutting tools which are arranged one behind the other in the direction of travel are available, of which at least one is designed in such a way that it can be displaced across the direction of travel. In this way, road surfaces even with, a curved road run or in parking bays can be cut off or, planed off without difficulty.

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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 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 12, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 30, 1985
GrantedApril 12, 1988
Term endedApril 12, 2005
Patent numberCA 1234975 A
Classification (IPC)E02F5/30

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedAug 30, 1985Patent grantedApril 12, 1988Term endedApril 12, 2005

Sources & verification

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