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经营范围
发明名称
Mud decoupler
摘要
申请公布号
US2824718(A)
申请公布日期
1958.02.25
申请号
US19540417032
申请日期
1954.03.18
申请人
BORG-WARNER CORPORATION
发明人
CURRIE GARDNER D.
分类号
E21B7/24
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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