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经营范围
发明名称
Mécanisme de piano
摘要
申请公布号
FR58897(E)
申请公布日期
1954.04.06
申请号
FRD58897
申请日期
1948.10.20
申请人
发明人
TCHAKIRIAN
分类号
G10C3/16
主分类号
G10C3/16
代理机构
代理人
主权项
地址
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