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发明名称
CONTROLLED ACCESS BARRIER
摘要
申请公布号
GB8709162(D0)
申请公布日期
1987.05.20
申请号
GB19870009162
申请日期
1987.04.16
申请人
ALTRA PRODUCTS LTD
发明人
分类号
E01F13/08
主分类号
E01F13/08
代理机构
代理人
主权项
地址
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