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经营范围
发明名称
RAILWAY SIGNALLING SYSTEM
摘要
申请公布号
CA410285(A)
申请公布日期
1943.01.26
申请号
CAD410285
申请日期
申请人
THE UNION SWITCH AND SIGNAL COMPANY
发明人
WARREN W. SEITZ
分类号
主分类号
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