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经营范围
发明名称
Dispositif pour l'entretien des vibrations d'un diapason
摘要
申请公布号
FR46660(E)
申请公布日期
1936.07.24
申请号
FRD46660
申请日期
1935.09.13
申请人
发明人
RUSPOLI
分类号
G01R23/02
主分类号
G01R23/02
代理机构
代理人
主权项
地址
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