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发明名称
RAILWAY SIGNAL FUSEE
摘要
申请公布号
CA428972(A)
申请公布日期
1945.07.24
申请号
CAD428972
申请日期
申请人
CANADIAN INDUSTRIES LIMITED
发明人
ALLAN TREW POWELL
分类号
主分类号
代理机构
代理人
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