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经营范围
发明名称
Improvements in or relating to electric modulating apparatus
摘要
申请公布号
GB484883(A)
申请公布日期
1938.05.11
申请号
GB19370029856
申请日期
1937.11.01
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H03C1/58
主分类号
H03C1/58
代理机构
代理人
主权项
地址
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