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发明名称	DISC HARROWS
摘要
申请公布号	CA501538(A)	申请公布日期	1954.04.13
申请号	CAD501538	申请日期
申请人	ALVAN V. BURCH	发明人	JOHN F. RUDE
分类号		主分类号
代理机构		代理人
主权项
地址

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