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经营范围
发明名称
Amplificateur thermionique.
摘要
申请公布号
CH233478(A)
申请公布日期
1944.07.31
申请号
CHD233478
申请日期
1942.05.09
申请人
STANDARD TELEPHON UND RADIO AG.
发明人
AG. STANDARD TELEPHON UND RADIO
分类号
H03F1/36;H03G3/08
主分类号
H03F1/36
代理机构
代理人
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地址
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