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Expired Canadian patentCanada

Retractable snowplow wing and mounting therefor

CA 1082454 A · Owner: H. K. Nuttall Equipment Co. Inc. · Inventors: Karges, John, Jr.; Raines, William L.

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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 retractable snowplow wing and mounting therefor which can be installed on substantially any truck with a longitudinal frame. The wing which may basically be of any desired construction is supported at both its inboard and outboard ends to permit raising it and swinging it horizontally from plowing position to a position substantially parallel to the truck body. The mechanism comprises first means attached to the inboard end of the wing and slidably mounted for vertical movement on support means carried by the truck frame and second means attached to the outboard end of the wing and comprising an extensible strut and motor means both of which are pivotally mounted on a bracket secured to …

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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 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 10, 1978
GrantedJuly 29, 1980
Term endedJuly 29, 1997
Patent numberCA 1082454 A
Classification (IPC)E01H5/00

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedFeb 10, 1978Patent grantedJuly 29, 1980Term endedJuly 29, 1997

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