Collapsible Rock Head and Associated Structure

Details for Australian Patent Application No. 2011200193 (hide)

Owner Barbera, J.

Inventors Barbera, James S.

Agent Lesicar Perrin

Pub. Number AU-A-2011200193

Priority 12/830,481 06.07.10 US; 61/308,472 02.02.10 US

Filing date 19 January 2011

Wipo publication date 18 August 2011

International Classifications

E21B 10/32 (2006.01) Drilling tools

E21B 7/20 (2006.01) Special methods or apparatus for drilling - Driving or forcing casings or pipes into boreholes, e.g. sinking

E21B 10/20 (2006.01) Drilling tools

Event Publications

3 February 2011 Complete Application Filed

  Priority application(s): 12/830,481 06.07.10 US; 61/308,472 02.02.10 US

3 March 2011 Amendment Made

  The nature of the amendment is: Amend the priority details to read 12/830,481 06.07.10 US and 61/308,472 02.02.10 US

18 August 2011 Application Open to Public Inspection

  Published as AU-A-2011200193

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