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发明名称
SIGNALLING SYSTEMS
摘要
申请公布号
CA603504(A)
申请公布日期
1960.08.16
申请号
CAD603504
申请日期
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED
发明人
SHAFI-UDDIN A. CHOUDHURY
分类号
主分类号
代理机构
代理人
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