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发明名称
摘要
申请公布号
JPS646694(Y2)
申请公布日期
1989.02.21
申请号
JP19810165150U
申请日期
1981.11.04
申请人
发明人
分类号
A01F12/40;A01F17/02;(IPC1-7):A01F17/02
主分类号
A01F12/40
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代理人
主权项
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