ROCK DRILL SILENCING APPARATUS

Details for Australian Patent Application No. 2002220948 (hide)

Owner BURGER, Nicolaas, Daniel, Lombard VON WIELLIGH, Adam, Jacobus OTTERMANN, Rudolf, Werner

Inventors BURGER, Nicolaas, Daniel, Lombard; OTTERMANN, Rudolf, Werner; VON WIELLIGH, Adam, Jacobus

Pub. Number AU-A-2002220948

PCT Pub. Number WO2003/009974

Priority 2001/6132 26.07.01 ZA

Filing date 30 November 2001

Wipo publication date 17 February 2003

International Classifications

B25D 017/12 Details of, or accessories for, portable power-driven percussive tools

E21B 019/24 Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

E21B 001/38 Methods or apparatus for drilling

Event Publications

29 May 2003 Application Open to Public Inspection

  Published as AU-A-2002220948

8 April 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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