Method and apparatus for vibratory drillings,申请号US19640392361-传众专利搜索

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发明名称	Method and apparatus for vibratory drillings
摘要
申请公布号	US3285349(A)	申请公布日期	1966.11.15
申请号	US19640392361	申请日期	1964.06.01
申请人	ORPHA B. BRANDON;HARVEY B. JACOBSON;N. A. HARDIN;CATHERINE H. NEWTON;HAZEL H. WRIGHT	发明人	BRANDON CLARENCE W.
分类号	E21B7/06;E21B7/24	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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