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发明名称
摘要
申请公布号
JPS5785021(U)
申请公布日期
1982.05.26
申请号
JP19800160369U
申请日期
1980.11.11
申请人
发明人
分类号
E02B7/22;E02B7/32;(IPC1-7):E02B7/22
主分类号
E02B7/22
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