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发明名称
CROSSING OBSTRUCTING DETECTOR
摘要
申请公布号
JPH1159423(A)
申请公布日期
1999.03.02
申请号
JP19970222595
申请日期
1997.08.19
申请人
NIPPON SIGNAL CO LTD:THE
发明人
MATSUO HIROICHI
分类号
H04N7/18;B61L29/00;B61L29/30;(IPC1-7):B61L29/00
主分类号
H04N7/18
代理机构
代理人
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