Trench digging attachment for tractors,申请号US19470760787-传众专利搜索

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发明名称	Trench digging attachment for tractors
摘要
申请公布号	US2550071(A)	申请公布日期	1951.04.24
申请号	US19470760787	申请日期	1947.07.14
申请人	LARKIN JOSEPH S	发明人	LARKIN JOSEPH S.
分类号	E02F3/08;E02F5/02;E02F5/06	主分类号	E02F3/08
代理机构		代理人
主权项
地址

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