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发明名称
Electric illuminating installation for stop signals on electric railways
摘要
申请公布号
GB434091(A)
申请公布日期
1935.08.26
申请号
GB19330031370
申请日期
1933.11.10
申请人
A. E. BEECK
发明人
分类号
B61L5/20
主分类号
B61L5/20
代理机构
代理人
主权项
地址
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