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经营范围
发明名称
Improvements in railway signalling apparatus
摘要
申请公布号
GB324727(A)
申请公布日期
1930.02.06
申请号
GB19280032356
申请日期
1928.11.06
申请人
SAMUEL TAYLOR
发明人
分类号
B61L23/16
主分类号
B61L23/16
代理机构
代理人
主权项
地址
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