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发明名称
摘要
申请公布号
JPS52109117(U)
申请公布日期
1977.08.19
申请号
JP19760017697U
申请日期
1976.02.17
申请人
发明人
分类号
A01C7/20;A01C5/06;A01C7/08;A01C7/12;(IPC1-7):A01C7/12
主分类号
A01C7/20
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