A percussion hammer for enlarging drilled holes

Details for Australian Patent Application No. 2006293487 (hide)

Owner Minroc Technical Promotions Limited

Inventors Purcell, Joseph

Agent Wrays

Pub. Number AU-B-2006293487

PCT Pub. Number WO2007/034462

Priority S2005/0621 20.09.05 IE

Filing date 7 September 2006

Wipo publication date 29 March 2007

Acceptance publication date 24 February 2011

International Classifications

E21B 7/28 (2006.01) Special methods or apparatus for drilling

E21B 4/14 (2006.01) Drives for drilling, used in the borehole

Event Publications

3 April 2008 PCT application entered the National Phase

  PCT publication WO2007/034462 Priority application(s): WO2007/034462

24 February 2011 Application Accepted

  Published as AU-B-2006293487

23 June 2011 Standard Patent Sealed

9 August 2012 Assignment Registered

  Minroc Technical Promotions Limited The patent has been assigned to Mincon Internaitonal Ltd

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