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发明名称
摘要
申请公布号
JP4043031(B2)
申请公布日期
2008.02.06
申请号
JP20030109810
申请日期
2003.04.15
申请人
发明人
分类号
E01B19/00;E01D22/00;E01D2/00;F16F15/02;G10K11/178
主分类号
E01B19/00
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代理人
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