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经营范围
发明名称
LONG FOCUS MAGNETIC LENS
摘要
申请公布号
JPS52153662(A)
申请公布日期
1977.12.20
申请号
JP19770070951
申请日期
1977.06.15
申请人
SIEMENS AG
发明人
ANDOREASU EERUMAN;RAINHORUTO SHIYUMITSUTO
分类号
H01J37/141;H01L21/027
主分类号
H01J37/141
代理机构
代理人
主权项
地址
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