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发明名称
Improvements in and relating to light switching devices
摘要
申请公布号
GB408567(A)
申请公布日期
1934.04.12
申请号
GB19320019394
申请日期
1932.07.08
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H05B37/02
主分类号
H05B37/02
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代理人
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