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经营范围
发明名称
Multistage amplifier or receiver arrangement
摘要
申请公布号
US1913024(A)
申请公布日期
1933.06.06
申请号
US19270231224
申请日期
1927.11.05
申请人
SIEMENS & HALSKE, AKTIENGESELLSCHAFT
发明人
GERLACH ERWIN
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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