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Expired Canadian patentCanada

Soil leveling apparatus with improved frame and hitch

CA 1293883 C · Owner: Mork, Orlan H. · Inventors: Mork, Orlan H.

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, An improved soil leveling apparatus includes a frame, connecting hitch means, and adjustable lost motion linkage secured to the top connection point of the hitch and, an optional scarifier assembly which is supported on a connector pivoted between the legs of the hitch. The scraper member of the frame is of generally inverted J-shaped cross section, and tine subassemblies can be substituted for the teeth on the scarifier assembly.

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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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 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.
FiledApril 27, 1987
GrantedJanuary 7, 1992
Term endedJanuary 7, 2009
Patent numberCA 1293883 C
Classification (IPC)E02F3/81 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 27, 1987Patent grantedJan 7, 1992Term endedJan 7, 2009

Sources & verification

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