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发明名称
摘要
申请公布号
JPS527844(B2)
申请公布日期
1977.03.04
申请号
JP19720119809
申请日期
1972.12.01
申请人
发明人
分类号
E02F3/80;E02F3/76
主分类号
E02F3/80
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