Countersink roof bit drill and method for using the same

Details for Australian Patent Application No. 2008237039 (hide)

Owner JENNMAR CORPORATION KENNAMETAL INC.

Inventors Oldsen, John G.; Bise, Douglas E.; Keller, Donald E.; Stankus, John C.; Rife, David Scott; Swope, Chad A.; Stables, Brandon S.

Agent Griffith Hack

Pub. Number AU-A-2008237039

PCT Pub. Number WO2008/124780

Priority 11/733,372 10.04.07 US

Filing date 9 April 2008

Wipo publication date 16 October 2008

International Classifications

E21B 10/42 (2006.01) Drilling tools

Event Publications

26 November 2009 PCT application entered the National Phase

  PCT publication WO2008/124780 Priority application(s): WO2008/124780

9 June 2011 Assignment before Grant

  JENNMAR CORPORATION; KENNAMETAL INC. The application has been assigned to KENNAMETAL INC.; FCI Holdings Delaware, Inc.

30 August 2012 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(e). 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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