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发明名称
Ringdichtung fuer hydraulische Bohrlochgeraete, insbesondere fuer hydraulische Rutschscheren
摘要
申请公布号
DE1298476(B)
申请公布日期
1969.07.03
申请号
DE1967SC40060
申请日期
1967.01.05
申请人
SCHLUMBERGER TECHNOLOGY CORP.
发明人
W. KISLING, JAMES
分类号
E21B31/113
主分类号
E21B31/113
代理机构
代理人
主权项
地址
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