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经营范围
发明名称
Locking mechanism for a mineral cutting bit
摘要
申请公布号
GB996691(A)
申请公布日期
1965.06.30
申请号
GB19640017723
申请日期
1964.04.29
申请人
GERALD WAYNE ELDERS
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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