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发明名称
DEEP HOLE BORING
摘要
申请公布号
CA740631(A)
申请公布日期
1966.08.16
申请号
CAD740631
申请日期
申请人
KARL H. BURGSMUELLER
发明人
KARL H. BURGSMUELLER
分类号
主分类号
代理机构
代理人
主权项
地址
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