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发明名称
IMPROVEMENTS IN OR RELATING TO BARRIERS
摘要
申请公布号
GB2234273(B)
申请公布日期
1993.10.13
申请号
GB19900005824
申请日期
1990.03.15
申请人
DAVID PETER * WAITE
发明人
DAVID PETER * WAITE
分类号
E04H17/00
主分类号
E04H17/00
代理机构
代理人
主权项
地址
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