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发明名称
Improvements in and relating to signalling systems
摘要
申请公布号
GB474618(A)
申请公布日期
1937.11.04
申请号
GB19360012697
申请日期
1936.05.05
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED;HARRY KEBBELL BOURNE
发明人
分类号
H01J61/52;H01J61/90
主分类号
H01J61/52
代理机构
代理人
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