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发明名称
摘要
申请公布号
JPH0318226(U)
申请公布日期
1991.02.22
申请号
JP19890079326U
申请日期
1989.07.04
申请人
发明人
分类号
E02B3/20;(IPC1-7):E02B3/20
主分类号
E02B3/20
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代理人
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地址
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