Torsional vibration sonic drill,申请号US19550517880-传众专利搜索

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发明名称	Torsional vibration sonic drill
摘要
申请公布号	US2921372(A)	申请公布日期	1960.01.19
申请号	US19550517880	申请日期	1955.06.24
申请人	BODINE JR ALBERT G	发明人	JR. ALBERT G. BODINE,
分类号	A61C1/07;A61C17/18;B23Q1/00;B23Q5/027	主分类号	A61C1/07
代理机构		代理人
主权项
地址

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