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发明名称
Vorsatzlinsenfilter fuer elektrische Lichtquellen
摘要
申请公布号
DE858684(C)
申请公布日期
1952.12.08
申请号
DE1951B014898
申请日期
1951.05.08
申请人
FA. C. AUG. BECK
发明人
BECK AUGUST
分类号
F21S8/10;F21V9/10
主分类号
F21S8/10
代理机构
代理人
主权项
地址
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