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发明名称
TELESCOPING MINE ROOF SUPPORT
摘要
申请公布号
AU534250(B2)
申请公布日期
1984.01.12
申请号
AU19800060960
申请日期
1980.07.31
申请人
DOBSON PARK INDUSTRIES LTD.
发明人
JOHN MARSH
分类号
F15B15/16;(IPC1-7):E21D15/44
主分类号
F15B15/16
代理机构
代理人
主权项
地址
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