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发明名称
Vorrichtung zum Einfuehren von Medien in unterirdische Hohlraeume
摘要
申请公布号
DE1294304(B)
申请公布日期
1969.05.08
申请号
DE196700K1677
申请日期
1967.03.10
申请人
KALIUM CHEMICALS LTD.
发明人
BOWEN DAHMS, JAMES;PRIESTLY EDMONDS, BYRON
分类号
E21B43/29
主分类号
E21B43/29
代理机构
代理人
主权项
地址
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