Rock drilling apparatus

Details for Australian Patent Application No. 2003200636 (hide)

Owner Halco Drilling International Limited

Inventors Green, Christopher J

Agent Spruson & Ferguson

Pub. Number AU-B-2003200636

Priority 0204904.7 01.03.02 GB

Filing date 24 February 2003

Wipo publication date 18 September 2003

Acceptance publication date 28 February 2008

International Classifications

E21B 1/38 (2006.01) Methods or apparatus for drilling

E21B 10/36 (2006.01) Drilling tools - Percussion drill bits

E21B 23/00 (2006.01) Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

E21B 31/00 (2006.01) Fishing for or freeing objects in boreholes or wells

Event Publications

13 March 2003 Complete Application Filed

  Priority application(s): 0204904.7 01.03.02 GB

18 September 2003 Application Open to Public Inspection

  Published as AU-B-2003200636

28 February 2008 Application Accepted

  Published as AU-B-2003200636

14 August 2008 Standard Patent Sealed

17 September 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This patent ceased under section 143(a), or Expired. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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