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发明名称
摘要
申请公布号
JPS56147841(U)
申请公布日期
1981.11.07
申请号
JP19800047446U
申请日期
1980.04.07
申请人
发明人
分类号
A01F12/40;A01F29/02;A01F29/04;A01F29/16;(IPC1-7):A01F29/02
主分类号
A01F12/40
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