Rock-drilling unit, drill bit changer, and method for changing drill bit

Details for Australian Patent Application No. 2009264153 (hide)

Owner SANDVIK MINING AND CONSTRUCTION OY

Inventors Siltala, Hannu

Agent Griffith Hack

Pub. Number AU-B-2009264153

PCT Pub. Number WO2009/156574

Priority 20085631 23.06.08 FI

Filing date 12 June 2009

Wipo publication date 30 December 2009

Acceptance publication date 5 April 2012

International Classifications

E21B 19/14 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

E21B 19/18 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

E21B 19/20 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

Event Publications

10 February 2011 PCT application entered the National Phase

  PCT publication WO2009/156574 Priority application(s): WO2009/156574

5 April 2012 Application Accepted

  Published as AU-B-2009264153

2 August 2012 Standard Patent Sealed

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