Methods of preloading a sonic drill head

Details for Australian Patent Application No. 2011213777 (hide)

Owner Longyear TM, Inc.

Inventors Drivdahl, Kristian S.; Able, Robert Eugene; Nevenner, Todd A.; Altrichter, Kenneth Carl

Agent Cotters

Pub. Number AU-A-2011213777

Parent 2009303538

Filing date 19 August 2011

Wipo publication date 8 September 2011

International Classifications

E21B 7/24 (2006.01) Special methods or apparatus for drilling

Event Publications

8 September 2011 Application Open to Public Inspection

  Published as AU-A-2011213777

8 September 2011 Complete Application Filed

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