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经营范围
发明名称
Proportioning apparatus
摘要
申请公布号
US2142062(A)
申请公布日期
1938.12.27
申请号
US19380190673
申请日期
1938.02.15
申请人
REFINING, INC.
发明人
THURMAN BENJAMIN H.
分类号
C11D13/04
主分类号
C11D13/04
代理机构
代理人
主权项
地址
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