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发明名称
摘要
申请公布号	JPS6220547(Y2)	申请公布日期	1987.05.25
申请号	JP19800124646U	申请日期	1980.09.02
申请人		发明人
分类号	E02F9/24;A01B45/02;E02F3/43;E02F9/20;E21B7/00;E21B7/02;(IPC1-7):E21B7/02	主分类号	E02F9/24
代理机构		代理人
主权项
地址

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