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经营范围
发明名称
Improvements in or relating to train describing equipment
摘要
申请公布号
GB517766(A)
申请公布日期
1940.02.08
申请号
GB19380015930
申请日期
1938.05.27
申请人
STANDARD TELEPHONES AND CABLES LIMITED;JOHN BALMAIN GRIFFITHS;ANDREW BROWN
发明人
分类号
B61L25/04
主分类号
B61L25/04
代理机构
代理人
主权项
地址
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