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经营范围
发明名称
INTERLOCKING TRACK CIRCUITS
摘要
申请公布号
GB1483642(A)
申请公布日期
1977.08.24
申请号
GB19740033803
申请日期
1974.07.31
申请人
GENERAL SIGNAL CORP
发明人
分类号
B61L1/18;(IPC1-7):B61L1/18
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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