Self actuating underreamer

Details for Australian Patent Application No. 2006301897 (hide)

Owner Minshull, R.

Inventors Minshull, Ronald George

Agent Middletons

Pub. Number AU-A-2006301897

PCT Pub. Number WO2007/041838

Priority 60/724,881 11.10.05 US

Filing date 10 October 2006

Wipo publication date 19 April 2007

International Classifications

E21B 10/32 (2006.01) Drilling tools

E21B 10/26 (2006.01) Drilling tools - Drill bits with leading portion, i.e. drill bits with a pilot cutter

Event Publications

29 May 2008 PCT application entered the National Phase

  PCT publication WO2007/041838 Priority application(s): WO2007/041838

13 January 2011 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(c). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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