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发明名称
Mineral cutting tools
摘要
申请公布号
GB2182373(A)
申请公布日期
1987.05.13
申请号
GB19860025936
申请日期
1986.10.30
申请人
* SPENCER TODWICK LIMITED
发明人
PETER * ALKER
分类号
E21C35/19;E21C35/197;(IPC1-7):E21C35/18
主分类号
E21C35/19
代理机构
代理人
主权项
地址
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