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发明名称
Lichttonzusatzgeraet fuer Kinowiedergabemaschinen
摘要
申请公布号
DE581769(C)
申请公布日期
1933.08.02
申请号
DED581769D
申请日期
1930.11.26
申请人
ZEISS IKON A.-G.
发明人
分类号
G03B31/00;G03B31/02
主分类号
G03B31/00
代理机构
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