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发明名称
Schutzmanschette fuer Bohrrohre
摘要
申请公布号
DE1002262(B)
申请公布日期
1957.02.14
申请号
DE1954V007634
申请日期
1954.08.06
申请人
BORG-WARNER CORPORATION
发明人
HANES JAMES WILLIAM ELLISON
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
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