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发明名称
摘要
申请公布号
JPS57105323(U)
申请公布日期
1982.06.29
申请号
JP19800184102U
申请日期
1980.12.19
申请人
发明人
分类号
E02B7/20;E02B9/04;(IPC1-7):E02B7/20
主分类号
E02B7/20
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代理人
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