Combination rotary and impact drill,申请号US19560563572-传众专利搜索

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发明名称	Combination rotary and impact drill
摘要
申请公布号	US2859941(A)	申请公布日期	1958.11.11
申请号	US19560563572	申请日期	1956.02.06
申请人	CARROLL MARTIN B;LESTER COURVILLE	发明人	CARROLL MARTIN B.;COURVILLE LESTER
分类号	E21B4/10	主分类号	E21B4/10
代理机构		代理人
主权项
地址

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