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发明名称
CHANGEUR DE FILMS
摘要
申请公布号
BE744423(A1)
申请公布日期
1970.06.15
申请号
BED744423
申请日期
1970.01.14
申请人
SIEMENS A.G., A BERLIN ET A MUNICH (ALLEMAGNE),
发明人
LA SOCIETE JARNHS ELEKTRISKA AB.
分类号
G03B17/34;(IPC1-7):G03B/
主分类号
G03B17/34
代理机构
代理人
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地址
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