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经营范围
发明名称
Production of iron oxide
摘要
申请公布号
US2184738(A)
申请公布日期
1939.12.26
申请号
US19380220842
申请日期
1938.07.23
申请人
MAGNETIC PIGMENT COMPANY
发明人
FIREMAN PETER
分类号
C01G49/06
主分类号
C01G49/06
代理机构
代理人
主权项
地址
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