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发明名称
TRENCH LINER
摘要
申请公布号
GB1255664(A)
申请公布日期
1971.12.01
申请号
GB19690023666
申请日期
1969.05.09
申请人
WILLIAM GIBBONS
发明人
WILLIAM GIBBONS
分类号
E02D17/08
主分类号
E02D17/08
代理机构
代理人
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