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经营范围
发明名称
ROAD BARRIER
摘要
申请公布号
PL154263(B1)
申请公布日期
1991.07.31
申请号
PL19860261962
申请日期
1986.10.20
申请人
发明人
分类号
B61L29/04;E01F;E01F13/00;(IPC1-7):E01F13/00
主分类号
B61L29/04
代理机构
代理人
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地址
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