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发明名称
Steuervorrichtung, insbesondere Notsteuer-vorrichtung zur Durchfuehrung von Arbeitenan Bohrlochkoepfen von Unterwasserbohrungen
摘要
申请公布号
DE1230384(B)
申请公布日期
1966.12.15
申请号
DE1965T028971
申请日期
1965.07.12
申请人
TEXACO DEVELOPMENT CORPORATION
发明人
PRICE TOM BROADDUS
分类号
E21B33/035
主分类号
E21B33/035
代理机构
代理人
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