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Expired Canadian patentCanada

Hitch and drive structure for pto-driven, semi-integral implement

CA 1295872 C · Owner: Walters, James C. · Inventors: Stephenson, Roger Dale; Richardson, Craig Allen; Walters, James C.

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

Abstract of the Disclosure A hitch adapter is attached to the tongue of an implement having components adapted for being driven by a tractor power take-off shaft and is constructed to permit the implement to be semi-integrally mounted either to a tractor having a hitch arrangement consisting only of a three-point hitch or to a tractor having a hitch arrangement wherein a quick coupler is carried by its three-point hitch without necessitating a change in the length of a drive shaft interconnecting the tractor power take-off shaft with an input shaft of a transmission assembly carried by the implement tongue.

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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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1988
GrantedFebruary 18, 1992
Term endedFebruary 18, 2009
Patent numberCA 1295872 C
Classification (IPC)A01B59/04 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMay 18, 1988Patent grantedFeb 18, 1992Term endedFeb 18, 2009

Sources & verification

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