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经营范围
发明名称
Phonographe à rotation uniformément accélérée ou uniformément retardée
摘要
申请公布号
FR38406(E)
申请公布日期
1931.06.03
申请号
FRD38406
申请日期
1930.03.31
申请人
发明人
JAFFARD LOUIS-LAURENT-CHARLE
分类号
G11B19/265
主分类号
G11B19/265
代理机构
代理人
主权项
地址
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