Gas and oil well casing head assembly,申请号US19600048692-传众专利搜索

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发明名称	Gas and oil well casing head assembly
摘要
申请公布号	US3158389(A)	申请公布日期	1964.11.24
申请号	US19600048692	申请日期	1960.08.10
申请人	TURNER CLYDE T	发明人	TURNER CLYDE T.
分类号	E21B33/04	主分类号	E21B33/04
代理机构		代理人
主权项
地址

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