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发明名称
IMPEDANCE BOND FOR TRACK CIRCUITS
摘要
申请公布号
CA334710(A)
申请公布日期
1933.08.08
申请号
CAD334710
申请日期
申请人
THE GENERAL RAILWAY SIGNAL COMPANY
发明人
WADE H. REICHARD
分类号
主分类号
代理机构
代理人
主权项
地址
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