Well head equipment,申请号US19570660409-传众专利搜索

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发明名称	Well head equipment
摘要
申请公布号	US3025083(A)	申请公布日期	1962.03.13
申请号	US19570660409	申请日期	1957.05.20
申请人	OIL CENTER TOOL COMPANY	发明人	LEBEAUX JACOB M.
分类号	E21B33/047	主分类号	E21B33/047
代理机构		代理人
主权项
地址

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