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发明名称
摘要
申请公布号
JPS55172447(U)
申请公布日期
1980.12.10
申请号
JP19790072399U
申请日期
1979.05.31
申请人
发明人
分类号
E02F3/22;(IPC1-7):E02F3/22
主分类号
E02F3/22
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代理人
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地址
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