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发明名称
摘要
申请公布号
JPS5253125(Y2)
申请公布日期
1977.12.02
申请号
JP19720049592U
申请日期
1972.04.28
申请人
发明人
分类号
E02F3/85;E02F3/64;(IPC1-7):E02F3/85
主分类号
E02F3/85
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代理人
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