Drilling sub for sidewall samplers,申请号US19500176814-传众专利搜索

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发明名称	Drilling sub for sidewall samplers
摘要
申请公布号	US2595018(A)	申请公布日期	1952.04.29
申请号	US19500176814	申请日期	1950.07.31
申请人	SHELL DEVELOPMENT COMPANY	发明人	STOKESBARY WALTER A.
分类号	E21B49/06	主分类号	E21B49/06
代理机构		代理人
主权项
地址

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