Drill-string shock absorbers

Details for Australian Patent Application No. 2008316961 (hide)

Owner Longyear TM, Inc.

Inventors Kruse, Christof; Wrede, Stefan; Hartung, Markus

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-B-2008316961

PCT Pub. Number WO2009/055412

Priority 12/253,082 16.10.08 US; 60/981,708 22.10.07 US

Filing date 22 October 2008

Wipo publication date 30 April 2009

Acceptance publication date 26 May 2011

International Classifications

E21B 17/07 (2006.01) Drilling rods or pipes

Event Publications

22 April 2010 PCT application entered the National Phase

  PCT publication WO2009/055412 Priority application(s): WO2009/055412

26 May 2011 Application Accepted

  Published as AU-B-2008316961

22 September 2011 Standard Patent Sealed

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