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发明名称
FROG FOR TRACK INTERSECTIONS
摘要
申请公布号
SU1134655(A1)
申请公布日期
1985.01.15
申请号
SU19833624362
申请日期
1983.07.22
申请人
GREBENNIKOV NIKOLAJ V,SU
发明人
GREBENNIKOV NIKOLAJ V,SU
分类号
E01B7/14;(IPC1-7):E01B7/14
主分类号
E01B7/14
代理机构
代理人
主权项
地址
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