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发明名称
Verfahren und Einrichtungen zum optischen Kopieren von Tonfilmen
摘要
申请公布号
DE630047(C)
申请公布日期
1936.05.19
申请号
DE1928A064269D
申请日期
1928.11.23
申请人
ALLGEMEINE ELEKTRICITAETS-GESELLSCHAFT
发明人
分类号
G03B27/46
主分类号
G03B27/46
代理机构
代理人
主权项
地址
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