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发明名称
摘要
申请公布号
JPH019390(Y2)
申请公布日期
1989.03.15
申请号
JP19810056456U
申请日期
1981.04.17
申请人
发明人
分类号
A01F12/00;A01F17/02;(IPC1-7):A01F12/00
主分类号
A01F12/00
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