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发明名称
Verfahren zum Verhindern von Metallabscheidung und Öl- oder Gasbohrung mit elektrischen Kontaktmitteln
摘要
申请公布号
DE69821665(D1)
申请公布日期
2004.03.25
申请号
DE19986021665
申请日期
1998.04.01
申请人
KEATCH, RICHARD
发明人
KEATCH, RICHARD
分类号
C23F15/00;C25F1/00;E21B37/00;E21B41/02;(IPC1-7):C23F15/00
主分类号
C23F15/00
代理机构
代理人
主权项
地址
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