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发明名称
RAILWAY POINTS ELECTRICAL HEATING SYSTEM
摘要
申请公布号
PL126134(B1)
申请公布日期
1983.07.30
申请号
PL19800221635
申请日期
1980.01.28
申请人
发明人
分类号
E01B;E01B7/24;(IPC1-7):E01B7/24
主分类号
E01B
代理机构
代理人
主权项
地址
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