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经营范围
发明名称
Ferrospinelles mixtes
摘要
申请公布号
FR1212975(A)
申请公布日期
1960.03.28
申请号
FRD1212975
申请日期
1958.10.21
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
C04B35/26
主分类号
C04B35/26
代理机构
代理人
主权项
地址
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