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发明名称
Dispositif mécanique d'enregistrement et de reproduction sonore
摘要
申请公布号
FR776564(A)
申请公布日期
1935.01.29
申请号
FRD776564
申请日期
1934.07.30
申请人
I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
G11B3/08
主分类号
G11B3/08
代理机构
代理人
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地址
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