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发明名称
Produit phosphorescent activé au germanium
摘要
申请公布号
FR1052058(A)
申请公布日期
1954.01.21
申请号
FRD1052058
申请日期
1952.03.04
申请人
SYLVANIA ELECTRIC PRODUCTS, INC.
发明人
分类号
C09K11/71
主分类号
C09K11/71
代理机构
代理人
主权项
地址
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