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发明名称
Dispositif reproducteur de sons.
摘要
申请公布号
CH138052(A)
申请公布日期
1930.02.15
申请号
CHD138052
申请日期
1929.05.24
申请人
CHARROT,FRANCIS;MERMOD,RENE
发明人
CHARROT,FRANCIS;MERMOD,RENE
分类号
G11B3/00
主分类号
G11B3/00
代理机构
代理人
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