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发明名称
Einrichtung zum selbsttaetigen Einschalten von Tonaufnahme- und Tonwiedergabegeraeten mit zwei oder mehreren Tontraegern
摘要
申请公布号
DE545732(C)
申请公布日期
1932.03.04
申请号
DED545732D
申请日期
1930.03.21
申请人
FRIESS AKT.-GES. FUER FILM- UND TONGERAETE
发明人
分类号
G11B17/02
主分类号
G11B17/02
代理机构
代理人
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