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Expired Canadian patentCanada

Truss boom for material handling truck

CA 1073409 A · Owner: Loed Corporation · Inventors: Christenson, John C.; Zunker, Clark T.

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 truss boom attachment for mounting on a fork assembly operatively mounted on a material handling truck. The fork assembly includes a rigid upright frame which receives a pair of load carrying forks. The truss boom attachment comprises a generally longitudinally elongated rigid truss frame which has an upright rigid rear end and a front end. Detachable hooks are defined on the rear end of the truss frame for detachably securing the truss boom on the rigid fork assembly of the material handling truck. A cable assembly, including a load carrying drop block is operativ-, ely carried on the material handling truck and the cable is guidably carried on the truss boom with the drop block passing …

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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 March 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 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.
Filed—
GrantedMarch 11, 1980
Term endedMarch 11, 1997
Patent numberCA 1073409 A
Classification (IPC)B66C1/00 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMarch 11, 1980Term endedMarch 11, 1997

Sources & verification

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