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发明名称
TRENCHER
摘要
申请公布号
GB9105061(D0)
申请公布日期
1991.04.24
申请号
GB19910005061
申请日期
1991.03.11
申请人
BRITISH GAS PLC
发明人
分类号
E02F3/18;E02F3/20;E02F3/76;E02F5/02;E02F5/08;E02F5/10;E02F5/12;E02F5/14;E02F7/00
主分类号
E02F3/18
代理机构
代理人
主权项
地址
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