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发明名称
Bohrlafette
摘要
申请公布号
DE1244689(B)
申请公布日期
1967.07.20
申请号
DE1966J031014
申请日期
1966.06.07
申请人
PAUL JOEST
发明人
JOEST PAUL
分类号
E21B19/084
主分类号
E21B19/084
代理机构
代理人
主权项
地址
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