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摘要
申请公布号
JP3069096(U)
申请公布日期
2000.05.30
申请号
JP19990882699U
申请日期
1999.11.19
申请人
发明人
分类号
B44C5/00;B44C3/00;E21B21/06;E21D9/12;(IPC1-7):B44C5/00
主分类号
B44C5/00
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