Yieldable prop having a yield section

Details for Australian Patent Application No. 2009202689 (hide)

Owner Jennmar Corporation

Inventors Stankus, John C.; Oldsen, John G.

Agent Griffith Hack

Pub. Number AU-A-2009202689

Parent 2003200611

Filing date 2 July 2009

Wipo publication date 23 July 2009

International Classifications

E21D 15/36 (2006.01) Working-face supports

E21D 15/40 (2006.01) Working-face supports

E21D 15/43 (2006.01) Working-face supports

E21D 15/44 (2006.01) Working-face supports

E21D 15/50 (2006.01) Working-face supports

E21D 15/56 (2006.01) Working-face supports

Event Publications

23 July 2009 Application Open to Public Inspection

  Published as AU-A-2009202689

23 July 2009 Complete Application Filed

28 October 2010 Assignment before Grant

  Jennmar Corporation The application has been assigned to FCI Holdings Delaware, Inc.

15 September 2011 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(d). Examination has been requested or an examination report has issued for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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