METHOD FOR MANUFACTURING FROGS,ESPECIALLY FOR RAILWAY TURNOUTS,申请号PL19860261997-传众专利搜索

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发明名称	METHOD FOR MANUFACTURING FROGS,ESPECIALLY FOR RAILWAY TURNOUTS
摘要
申请公布号	PL261997(A1)	申请公布日期	1988.06.23
申请号	PL19860261997	申请日期	1986.10.23
申请人		发明人
分类号	E01B;(IPC1-7):E01B/	主分类号	E01B
代理机构		代理人
主权项
地址

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