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发明名称
摘要
申请公布号
JPH0497971(U)
申请公布日期
1992.08.25
申请号
JP19900406123U
申请日期
1990.12.29
申请人
发明人
分类号
E03D3/02;(IPC1-7):E03D3/02
主分类号
E03D3/02
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代理人
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地址
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