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发明名称
Improvements in or relating to wireless signalling systems
摘要
申请公布号
GB391254(A)
申请公布日期
1933.04.27
申请号
GB19310035615
申请日期
1931.12.23
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H04B1/12
主分类号
H04B1/12
代理机构
代理人
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