Method and bit for directional horizontal boring

Details for Australian Patent Application No. 2001288875 (hide)

Owner Earth Tool Company, L.L.C.

Inventors Crane, Robert F.; Wentworth, Steven W.

Agent Freehills

Pub. Number AU-B-2001288875

PCT Pub. Number WO02/20935

Priority 09657353 07.09.00 US

Filing date 7 September 2001

Wipo publication date 22 March 2002

Acceptance publication date 2 June 2005

International Classifications

E21B 007/04 Special methods or apparatus for drilling - Directional drilling

E21B 010/16 Drilling tools

Event Publications

30 September 2004 Amendment Made

  The nature of the amendment is: Amend the invention title to Method and bit for directional horizontal boring

2 June 2005 Application Accepted

  Published as AU-B-2001288875

29 September 2005 Standard Patent Sealed

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