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发明名称
摘要
申请公布号
JPS646017(Y2)
申请公布日期
1989.02.15
申请号
JP19810163181U
申请日期
1981.10.29
申请人
发明人
分类号
A01C11/02;A01B63/00;A01B63/10;A01B63/114;(IPC1-7):A01C11/02
主分类号
A01C11/02
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