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经营范围
发明名称
MINERAL CUTTING
摘要
申请公布号
GB8622605(D0)
申请公布日期
1986.10.22
申请号
GB19860022605
申请日期
1986.09.19
申请人
WIMET MINING LTD
发明人
分类号
E21C35/19
主分类号
E21C35/19
代理机构
代理人
主权项
地址
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