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发明名称
Preparation of black oxide of iron
摘要
申请公布号
US2631085(A)
申请公布日期
1953.03.10
申请号
US19470738936
申请日期
1947.04.02
申请人
RECONSTRUCTION FINANCE CORPORATION
发明人
BENNETCH LEONARD M.
分类号
C01G49/08
主分类号
C01G49/08
代理机构
代理人
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