A measuring instrument is detected Train onboard signal frequency detector on the railroad for metro system,申请号KR20090007872U-传众专利搜索

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发明名称	A measuring instrument is detected Train onboard signal frequency detector on the railroad for metro system
摘要
申请公布号	KR20090006960(U)	申请公布日期	2009.07.08
申请号	KR20090007872U	申请日期	2009.06.18
申请人		发明人
分类号	B61L3/20	主分类号	B61L3/20
代理机构		代理人
主权项
地址

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