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Expired Canadian patentCanada

Method and apparatus for operating equipment in a remote location

CA 1318244 C · Owner: Cooper Industries, Inc. · Inventors: Taylor, William M.; Montgomery, William C.; Wedel, Alfred W.

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, An improved method and apparatus for operating or setting equipment within a subsea marine wellhead from the surface having an indicating signal provided at the surface of the successful completion of such operation. The steps of the method include the lowering of a well component and the detecting and transmitting equipment on a running string from the surface; detecting the successful completion of the subsea operation and transmitting, to the surface a signal signifying that the operations within the subsea wellhead have been successfully completed. The apparatus includes the running string the, detecting means which may be an acoustic detector or a ferrous …

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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 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
  • 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 28, 1988
GrantedMay 25, 1993
Term endedMay 25, 2010
Patent numberCA 1318244 C
Classification (IPC)G01V1/40 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 28, 1988Patent grantedMay 25, 1993Term endedMay 25, 2010

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