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发明名称
Improvements relating to electric bells and like devices
摘要
申请公布号
GB414526(A)
申请公布日期
1934.08.09
申请号
GB19330023843
申请日期
1933.08.28
申请人
SIEMENS BROTHERS & CO., LIMITED;CHRISTIAN RASMUS RIBER
发明人
分类号
G10K1/26
主分类号
G10K1/26
代理机构
代理人
主权项
地址
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