Transfer mechanism for auger drills,申请号US19550532841-传众专利搜索

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发明名称	Transfer mechanism for auger drills
摘要
申请公布号	US2846093(A)	申请公布日期	1958.08.05
申请号	US19550532841	申请日期	1955.09.07
申请人	JOY MANUFACTURING COMPANY	发明人	DENSMORE NEAL W.
分类号	E21B19/15	主分类号	E21B19/15
代理机构		代理人
主权项
地址

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