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发明名称
摘要
申请公布号
JPS5755395(Y2)
申请公布日期
1982.11.30
申请号
JP19780118708U
申请日期
1978.08.30
申请人
发明人
分类号
E02B7/54;(IPC1-7):E02B7/54
主分类号
E02B7/54
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代理人
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