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发明名称
Wax suppressor
摘要
申请公布号
US2250998(A)
申请公布日期
1941.07.29
申请号
US19390307083
申请日期
1939.12.01
申请人
SHELL DEVELOPMENT COMPANY
发明人
NARBERES RENE J.;DERBENWICK FRANK
分类号
主分类号
代理机构
代理人
主权项
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