DART-OPERATED BIG BORE BYPASS VALVE

Details for Australian Patent Application No. 2003271839 (hide)

Owner LEE, Paul, Bernard

Inventors LEE, Paul, Bernard

Pub. Number AU-A-2003271839

PCT Number PCT/GB03/03770

PCT Pub. Number WO2004/022906

Priority 0220445.1 03.09.02 GB

Filing date 29 August 2003

Wipo publication date 29 March 2004

International Classifications

E21B 021/10 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 034/14 Valve arrangements for boreholes or wells

Event Publications

22 January 2004 Complete Application Filed

  Priority application(s): 0220445.1 03.09.02 GB

13 May 2004 Application Open to Public Inspection

  Published as AU-A-2003271839

7 July 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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