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经营范围
发明名称
Improvements relating to railway block signalling
摘要
申请公布号
GB809070(A)
申请公布日期
1959.02.18
申请号
GB19550020964
申请日期
1955.07.20
申请人
SOCIETE TECHNIQUE POUR L'INDUSTTRIE NOUVELLE S.A. "STIN"
发明人
分类号
B61L23/12
主分类号
B61L23/12
代理机构
代理人
主权项
地址
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