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Expired Canadian patentCanada

Stone-laying machine

CA 1322992 C · Owner: Probst Greif- Und Fordertechnik Gmbh · Inventors: Probst, Martin

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 stone-laying machine used in paving and moving curb and composite stones or similar materials, comprising: a base frame which supports the essential superstructure and mountings of the stone-laying machine; a roof construction for the machine attached to said base frame; a front fixing device movably attached to said base frame; a front axle held movably to said base frame by said front fixing device; a front point of rotation about which said front fixing device and said front axle are rotatable on said base frame; a perpendicular axle connected on one end rigidly and fixedly to said front fixing device wherein the axis of said perpendicular axle runs coaxially with the vertical axis …

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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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
  • 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 14, 1989
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1322992 C
Classification (IPC)E01C19/52

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedAug 14, 1989Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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