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发明名称
Amplifying device
摘要
申请公布号
US3022379(A)
申请公布日期
1962.02.20
申请号
US19590803116
申请日期
1959.03.31
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
SODERBAUM CARL GUSTAF;MITNITZKY INGEMAR
分类号
H04M1/60;H04M9/10
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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