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经营范围
发明名称
Mud separator
摘要
申请公布号
US2928546(A)
申请公布日期
1960.03.15
申请号
US19550531222
申请日期
1955.08.29
申请人
CHURCH CARROLL E
发明人
CHURCH CARROLL E.
分类号
E21B21/06
主分类号
E21B21/06
代理机构
代理人
主权项
地址
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