Bedrock drilling and excavating apparatus

Details for Australian Patent Application No. 2004201770 (hide)

Owner Chuan Home Machinery Co., Ltd

Inventors Lee, Chin-Yi

Agent Lord and Company

Pub. Number AU-B-2004201770

Filing date 29 April 2004

Wipo publication date 17 November 2005

Acceptance publication date 10 December 2009

International Classifications

E21B 6/04 (2006.01) Drives for drilling with combined rotary and percussive action

Event Publications

13 May 2004 Complete Application Filed

17 November 2005 Application Open to Public Inspection

  Published as AU-B-2004201770

10 December 2009 Application Accepted

  Published as AU-B-2004201770

8 April 2010 Standard Patent Sealed

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