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发明名称
摘要
申请公布号
JPH0318266(U)
申请公布日期
1991.02.22
申请号
JP19890091931U
申请日期
1989.08.04
申请人
发明人
分类号
E03B7/10;(IPC1-7):E03B7/10
主分类号
E03B7/10
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