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发明名称
RAILROAD CROSSING BOARD
摘要
申请公布号
JPH0610307(A)
申请公布日期
1994.01.18
申请号
JP19920171191
申请日期
1992.06.29
申请人
OOSHITA SANGYO KK
发明人
YOSHINO SEIZO
分类号
E01C9/04;(IPC1-7):E01C9/04
主分类号
E01C9/04
代理机构
代理人
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