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经营范围
发明名称
RAIL FASTENER
摘要
申请公布号
GB1553793(A)
申请公布日期
1979.10.10
申请号
GB19770046287
申请日期
1977.11.07
申请人
PORTEC INC
发明人
分类号
E01B9/30;E01B9/48;(IPC1-7):E01B9/30;E01B9/34
主分类号
E01B9/30
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代理人
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