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Expired Canadian patentCanada

Movable working platform for use in racking drill pipe

CA 1077919 A · Owner: Lee C. Moore Corporation · Inventors: Jenkins, Cecil

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, Suspension members flexibly connected to a carriage and to an overhead support above the racking platform of an oil well mast or derrick support the carriage which is provided, with a floor to support a derrick man therein. The lower end of the suspension means can be swung back and forth parallel to the side of the mast or derrick and also at right angles to it to thereby move the carriage in the same directions the carriage, being provided with a lateral seat for receiving the upper end portion of a pipe and moving it with the carriage into another position.

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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 May 20, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 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—
GrantedMay 20, 1980
Term endedMay 20, 1997
Patent numberCA 1077919 A
Classification (IPC)E21B19/14

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 20, 1980Term endedMay 20, 1997

Sources & verification

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