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发明名称
摘要
申请公布号
JPH0372929(U)
申请公布日期
1991.07.23
申请号
JP19890132746U
申请日期
1989.11.15
申请人
发明人
分类号
E02F3/815;E01H5/06;E02F9/28;(IPC1-7):E01H5/06
主分类号
E02F3/815
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