Improvements in and relating to drilling rigs,申请号GB19540016206-传众专利搜索

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发明名称	Improvements in and relating to drilling rigs
摘要
申请公布号	GB785754(A)	申请公布日期	1957.11.06
申请号	GB19540016206	申请日期	1954.06.01
申请人	HANDS-ENGLAND OILFIELDS EQUIPMENT LIMITED	发明人	ENGLAND BRIAN AITCHISON
分类号	E02F5/20;E21B19/087	主分类号	E02F5/20
代理机构		代理人
主权项
地址

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