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发明名称
Dispositif pour l'accord de précision de diapasons
摘要
申请公布号
FR710694(A)
申请公布日期
1931.08.27
申请号
FRD710694
申请日期
1931.02.07
申请人
SIEMENS & HALSKE AKTIEN-GESELLSCHAFT
发明人
分类号
G10G7/02
主分类号
G10G7/02
代理机构
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