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发明名称
VERFAHREN ZUR ANWENDUNG VON ERDOELBEGLEITGAS
摘要
申请公布号
DD147859(A1)
申请公布日期
1981.04.22
申请号
DD19790217725
申请日期
1979.12.17
申请人
RICHTER,KLAUS-JUERGEN,DD;HEUER,KLAUS,DD;VOIGT,PETER,DD
发明人
RICHTER,KLAUS-JUERGEN,DD;HEUER,KLAUS,DD;VOIGT,PETER,DD
分类号
E21B43/00;(IPC1-7):E21B43/00
主分类号
E21B43/00
代理机构
代理人
主权项
地址
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