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发明名称
摘要
申请公布号
JPS57117921(U)
申请公布日期
1982.07.22
申请号
JP19810005065U
申请日期
1981.01.16
申请人
发明人
分类号
A01C11/02;(IPC1-7):A01C11/02
主分类号
A01C11/02
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代理人
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