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发明名称
Dispositif d'amplification.
摘要
申请公布号
CH258991(A)
申请公布日期
1948.12.31
申请号
CHD258991
申请日期
1945.06.02
申请人
STANDARD TELEPHONE ET RADIO S. A.
发明人
STANDARD TELEPHONE ET RADIO S. A.
分类号
H03F1/36;H03F3/189
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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