WELDED JOINTS FOR ROTARYVIBRATORY DRILLS HAVING REDUCED STRESS

Details for Australian Patent Application No. 2003250653 (hide)

Owner ROUSSY, Raymond, Joseph

Inventors ROUSSY, Raymond, Joseph

Pub. Number AU-A-2003250653

PCT Number PCT/CA03/01049

PCT Pub. Number WO2004/009948

Priority 2,394,488 19.07.02 CA

Filing date 10 July 2003

Wipo publication date 9 February 2004

International Classifications

E21B 007/24 Special methods or apparatus for drilling

E21B 017/042 Drilling rods or pipes

Event Publications

16 October 2003 Complete Application Filed

  Priority application(s): 2,394,488 19.07.02 CA

18 March 2004 Application Open to Public Inspection

  Published as AU-A-2003250653

14 April 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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