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经营范围
发明名称
ROCK BREAKER
摘要
申请公布号
GB2006301(B)
申请公布日期
1982.03.17
申请号
GB19780038148
申请日期
1978.09.26
申请人
COAL INDUSTRY (PATENTS) LTD
发明人
分类号
E21B49/00;E21C37/04;E21C39/00;(IPC1-7):E21C37/04;G01N3/10
主分类号
E21B49/00
代理机构
代理人
主权项
地址
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