Sampling drilling fluid,申请号US19540426439-传众专利搜索

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发明名称	Sampling drilling fluid
摘要
申请公布号	US2902637(A)	申请公布日期	1959.09.01
申请号	US19540426439	申请日期	1954.04.29
申请人	GULF RESEARCH & DEVELOPMENT COMPANY	发明人	WYLLIE MALCOLM R. J.
分类号	E21B49/08	主分类号	E21B49/08
代理机构		代理人
主权项
地址

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