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发明名称
Gesteinsdrehbohrmaschine
摘要
申请公布号
DE901881(C)
申请公布日期
1954.01.18
申请号
DE1951V003310
申请日期
1951.04.22
申请人
VICTOR PRODUCTS (WALLSEND) LTD.
发明人
CAMERON ALEXANDER
分类号
E21B44/08
主分类号
E21B44/08
代理机构
代理人
主权项
地址
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