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摘要
申请公布号
JPS56116455(U)
申请公布日期
1981.09.07
申请号
JP19800009554U
申请日期
1980.01.31
申请人
发明人
分类号
E02F5/06;E02F3/14;E02F5/10;E21B7/12;E21B7/132;(IPC1-7):E02F3/14
主分类号
E02F5/06
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