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经营范围
发明名称
Elektromagnetisches Lichtsteuergeraet zur Tonaufzeichnung
摘要
申请公布号
DE666596(C)
申请公布日期
1938.10.24
申请号
DE1936H147254D
申请日期
1936.04.15
申请人
KLANGFILM G.M.B.H.
发明人
HUGERSHOFF HEINRICH
分类号
G02F1/01;G11B7/00
主分类号
G02F1/01
代理机构
代理人
主权项
地址
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