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发明名称
摘要
申请公布号
JPS4971416(U)
申请公布日期
1974.06.21
申请号
JP19720117984U
申请日期
1972.10.11
申请人
发明人
分类号
A01C7/08;A01C7/00;A01C7/02;(IPC1-7):A01C7/00
主分类号
A01C7/08
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代理人
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