Improvements in reversible tractor ploughs,申请号GB19510018644-传众专利搜索

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发明名称	Improvements in reversible tractor ploughs
摘要
申请公布号	GB728587(A)	申请公布日期	1955.04.20
申请号	GB19510018644	申请日期	1951.08.08
申请人	FREETHY CHAMPION	发明人
分类号	A01B3/42	主分类号	A01B3/42
代理机构		代理人
主权项
地址

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