Method and apparatus for coring,申请号US19390267423-传众专利搜索

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发明名称	Method and apparatus for coring
摘要
申请公布号	US2264449(A)	申请公布日期	1941.12.02
申请号	US19390267423	申请日期	1939.04.12
申请人	STANDARD OIL DEVELOPMENT COMPANY	发明人	MOUNCE WHITMAN D.
分类号	E21B25/08	主分类号	E21B25/08
代理机构		代理人
主权项
地址

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