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发明名称
Vorrichtung zum Pruefen einer mit Kerrzelle abrbeitenden Schallaufzeichnungseinrichtung
摘要
申请公布号
DE625531(C)
申请公布日期
1936.02.11
申请号
DE1933K129109D
申请日期
1933.02.19
申请人
KLANGFILM G.M.B.H.;KLANGFILM G.M.B.H.
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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