Improvements in or relating to tongs for screwing or unscrewing pipe sections,申请号GB19480005457-传众专利搜索

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发明名称	Improvements in or relating to tongs for screwing or unscrewing pipe sections
摘要
申请公布号	GB652425(A)	申请公布日期	1951.04.25
申请号	GB19480005457	申请日期	1948.02.24
申请人	BYRON JACKSON CO.	发明人
分类号	E21B19/16	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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