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发明名称
CONCRETE SLEEPER FOR TRACK CIRCUITRY
摘要
申请公布号
GB2018869(A)
申请公布日期
1979.10.24
申请号
GB19790012585
申请日期
1979.04.10
申请人
HUMES LTD
发明人
分类号
B61L1/18;B61L1/20;E01B3/28;E01B3/38;E01B9/30;(IPC1-7):E01B3/28
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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