Well head and casing suspension structure,申请号US19400362028-传众专利搜索

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发明名称	Well head and casing suspension structure
摘要
申请公布号	US2380388(A)	申请公布日期	1945.07.31
申请号	US19400362028	申请日期	1940.10.21
申请人	CAMERON IRON WORKS	发明人	ALLEN HERBERT
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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