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Expired Canadian patentCanada

Vehicle and foldable boom assembly

CA 1099239 A · Owner: Clark Equipment Company · Inventors: Schmidt, Donald K.; Kuhn, Patrick

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

A vehicle and foldable boom assembly includes an inner boom that extends outwardly from a side of the vehicle and an outer boom that extends outwardly from the inner boom to a working position. A hinge having a pivot axis that is disposed generally vertically interconnects, the inner and outer booms and allows the outer boom to swing rearwardly to avoid structural damage upon impact with a foreign object; and the pivot axis is inclined in a direction that resiliently urges the outer boom forwardly to the working position so that the outer boom is automatically reset to the working position subsequent to impact with a foreign object. -0-

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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 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 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.
FiledNovember 23, 1978
GrantedApril 14, 1981
Term endedApril 14, 1998
Patent numberCA 1099239 A
Classification (IPC)A01C23/00 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedNov 23, 1978Patent grantedApril 14, 1981Term endedApril 14, 1998

Sources & verification

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