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发明名称
Improvements relating to signalling apparatus
摘要
申请公布号
GB898873(A)
申请公布日期
1962.06.14
申请号
GB19590028782
申请日期
1959.08.22
申请人
JOHN FRANCIS NEVILLE STANIER
发明人
分类号
B61L3/22;B61L25/04
主分类号
B61L3/22
代理机构
代理人
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