Posthole digging machine,申请号US19480019116-传众专利搜索

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发明名称	Posthole digging machine
摘要
申请公布号	US2595686(A)	申请公布日期	1952.05.06
申请号	US19480019116	申请日期	1948.04.05
申请人	MANNING DAVE M	发明人	MANNING DAVE M.
分类号	E21B7/02	主分类号	E21B7/02
代理机构		代理人
主权项
地址

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