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发明名称
Dispositif d'accord pour postes récepteurs
摘要
申请公布号
FR685005(A)
申请公布日期
1930.07.03
申请号
FRD685005
申请日期
1929.11.15
申请人
THE GRAMOPHONE COMPANY LIMITED
发明人
分类号
H03J3/28
主分类号
H03J3/28
代理机构
代理人
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