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发明名称
摘要
申请公布号
DE8812636(U1)
申请公布日期
1989.03.09
申请号
DE19880012636U
申请日期
1988.10.07
申请人
FUNDERINGSTECHNIEKEN VERSTRAETEN B.V., OOSTBURG, NL
发明人
分类号
E02F9/26;E21B7/10;E21B47/022
主分类号
E02F9/26
代理机构
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