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发明名称
Procédés de préparation de tungstates fluorescents
摘要
申请公布号
FR1074570(A)
申请公布日期
1954.10.06
申请号
FRD1074570
申请日期
1952.08.26
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G21K4/00
主分类号
G21K4/00
代理机构
代理人
主权项
地址
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