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发明名称
RAILWAY TRACK CIRCUITS
摘要
申请公布号
GB2213972(B)
申请公布日期
1991.07.10
申请号
GB19880027837
申请日期
1988.11.29
申请人
GILBERT * ALT
发明人
GILBERT * ALT
分类号
B61L1/18;B61L23/16
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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