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Expired Canadian patentCanada

Ground anchor for rigidly supporting above ground structure

CA 1235280 A · Owner: Wilson, James M. · Inventors: Wilson, James M.

CIPO record

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Abstract From the Canadian patent

GROUND ANCHOR FOR RIGIDLY SUPPORTING ABOVE GROUND STRUCTURE", ABSTRACT OF THE DISCLOSURE A ground anchor particularly for supporting a satelite dish includes a frame formed from a plurality of tubular arms which extend out to apexes of the frame in a horizontal plane. Each apex is attached to a respective ground anchor in the form of a screw flight coupled to a shaft which can be screwed into the ground with the shaft vertical together with a wedge member having a sleeve for passing over the shaft and a plurality of fins extending outwardly from the sleeve so that the wedge member can be hammered onto the shaft into the ground at the surface to prevent lateral shifting of the shaft. 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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 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.
FiledJanuary 17, 1985
GrantedApril 19, 1988
Term endedApril 19, 2005
Patent numberCA 1235280 A
Classification (IPC)E02D5/80

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJan 17, 1985Patent grantedApril 19, 1988Term endedApril 19, 2005

Sources & verification

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