Pneumatic drifter with replaceable foot pieces

Details for Australian Patent Application No. 2008356493 (hide)

Owner Longyear TM, Inc.

Inventors Murray, William James

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-B-2008356493

PCT Pub. Number WO2009/142666

Priority 61/054,405 19.05.08 US; 12/337,510 17.12.08 US

Filing date 19 December 2008

Wipo publication date 26 November 2009

Acceptance publication date 24 November 2011

International Classifications

E21B 7/02 (2006.01) Special methods or apparatus for drilling - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting

E21B 3/02 (2006.01) Rotary drilling

E21B 15/04 (2006.01) Other equipment or details for drilling

Event Publications

28 October 2010 PCT application entered the National Phase

  PCT publication WO2009/142666 Priority application(s): WO2009/142666

24 November 2011 Application Accepted

  Published as AU-B-2008356493

22 March 2012 Standard Patent Sealed

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