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发明名称
METHOD OF DETECTING OBSTRUCTION ON RAILROAD CROSSING ROAD
摘要
申请公布号
JPH01306365(A)
申请公布日期
1989.12.11
申请号
JP19880133860
申请日期
1988.05.31
申请人
NIPPON SIGNAL CO LTD:THE
发明人
TODA JUNYA;KUROSAKI HISASHI
分类号
B61L29/00
主分类号
B61L29/00
代理机构
代理人
主权项
地址
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