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发明名称
摘要
申请公布号
JPH0499798(U)
申请公布日期
1992.08.28
申请号
JP19910030049U
申请日期
1991.02.01
申请人
发明人
分类号
E02B3/12;E21D11/38;(IPC1-7):E21D11/38
主分类号
E02B3/12
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代理人
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