Dual Station Two-leg Low-position Top Coal Caving Hydraulic Support

Details for Australian Patent Application No. 2012100340 (hide)

Owner ChinaCoal Beijing Coal Mining Machinery Co., Ltd.

Inventors Guozhu, Liu; Dongsheng, Bao

Agent Cullens

Pub. Number AU-A-2012100340

Priority 201120142565.5 06.05.11 CN

Filing date 27 March 2012

Opi date 26 April 2012

International Classifications

E21D 23/04 (2006.01) Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor

E21D 23/00 (2006.01) Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor

Event Publications

12 April 2012 Innovation Patent Application Filed

  Priority application(s): 201120142565.5 06.05.11 CN

26 April 2012 Innovation Patent Open to Public Inspection

  Published as AU-A-2012100340

26 April 2012 Innovation Patent Sealed

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