Improvements in and relating to tractor devices,申请号GB19400012337-传众专利搜索

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发明名称	Improvements in and relating to tractor devices
摘要
申请公布号	GB542673(A)	申请公布日期	1942.01.22
申请号	GB19400012337	申请日期	1940.07.30
申请人	ROSS WILLIAM PHELPS	发明人
分类号	B60P3/42	主分类号	B60P3/42
代理机构		代理人
主权项
地址

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