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经营范围
发明名称
Luminescent indicating device
摘要
申请公布号
GB812816(A)
申请公布日期
1959.04.29
申请号
GB19550012282
申请日期
1955.04.28
申请人
SATSURO UMEDA
发明人
分类号
H01J31/14
主分类号
H01J31/14
代理机构
代理人
主权项
地址
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