Pressure core barrel,申请号US19420447047-传众专利搜索

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发明名称	Pressure core barrel
摘要
申请公布号	US2412915(A)	申请公布日期	1946.12.17
申请号	US19420447047	申请日期	1942.06.07
申请人	STANDARD OIL DEVELOPMENT COMPANY	发明人	SEWELL BENJAMIN W.
分类号	E21B25/02;E21B25/08	主分类号	E21B25/02
代理机构		代理人
主权项
地址

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