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Expired Canadian patentCanada

Transport mechanism for single and multiple unit pull type implements

CA 1104351 A · Owner: Hundeby, David R. · Inventors: Hundeby, David R.

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

23-, "TRANSPORT MECHANISM FOR SINGLE AND MULTIPLE UNIT PULL TYPE IMPLEMENTS", ABSTRACT OF THE DISCLOSURE In its simplest form, a single unit implement such as a swather or the like, can be moved from field position to transport position by moving the rear offside wheels to the desired angle and fixing them in this position and allowing the near side rear wheel to castor freely. When used with multiple units, a tandem hitch is secured to the existing hitch of the front implement and extends to the next following implement with the rear wheel being positioned as heretofore. Adjustment may be provided between the adjacent units to set the relationship of the trailing unit relative to the …

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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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 27, 1978
GrantedJuly 7, 1981
Term endedJuly 7, 1998
Patent numberCA 1104351 A
Classification (IPC)A01B59/04 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 27, 1978Patent grantedJuly 7, 1981Term endedJuly 7, 1998

Sources & verification

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