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发明名称
Verfahren zum Herstellen einer Mehrzahl auf einem Traeger uebereinandergelagerter Schallaufzeichnungen
摘要
申请公布号
DE565353(C)
申请公布日期
1933.06.07
申请号
DE1929D058035D
申请日期
1929.03.31
申请人
KARL DAHMEN
发明人
分类号
主分类号
代理机构
代理人
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