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发明名称
摘要
申请公布号
JP3057642(B2)
申请公布日期
2000.07.04
申请号
JP19890186273
申请日期
1989.07.18
申请人
发明人
分类号
E02B7/20;B66F3/35;E02B7/00;E02B15/04;E02B15/06;(IPC1-7):E02B15/06
主分类号
E02B7/20
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代理人
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