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经营范围
发明名称
MAGNETIC MATERIAL
摘要
申请公布号
YU173978(A)
申请公布日期
1983.12.31
申请号
YU19780001739
申请日期
1978.07.20
申请人
RCA CORPORATION
发明人
SMITH J.L.
分类号
H01J9/44;H01J29/54;H01J29/70;H04N9/28;(IPC1-7):H01J29/58
主分类号
H01J9/44
代理机构
代理人
主权项
地址
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