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经营范围
发明名称
MINERAL CUTTER PICK
摘要
申请公布号
GB9023029(D0)
申请公布日期
1990.12.05
申请号
GB19900023029
申请日期
1990.10.23
申请人
HYDRA TOOLS INTERNATIONAL PLC
发明人
分类号
E21C35/18;E21C35/183
主分类号
E21C35/18
代理机构
代理人
主权项
地址
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