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发明名称
Improvements in the manufacture of chromium oxide
摘要
申请公布号
GB353152(A)
申请公布日期
1931.07.23
申请号
GB19300015843
申请日期
1930.05.22
申请人
JULES EMILE DEMANT
发明人
分类号
C01G37/02
主分类号
C01G37/02
代理机构
代理人
主权项
地址
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