Load-bearing pressurized liquid column

Details for Australian Patent Application No. 2004224897 (hide)

Owner Efficient Mining Systems LLC

Inventors Heath, Roland B

Agent FB Rice

Pub. Number AU-A-2004224897

Filing date 27 October 2004

Wipo publication date 11 May 2006

International Classifications

E21D 15/51 (2006.01) Working-face supports

Event Publications

11 November 2004 Complete Application Filed

11 May 2006 Application Open to Public Inspection

  Published as AU-A-2004224897

18 December 2008 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(a). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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