Method of manufacturing a box end thread protector for sucker rod couplings and the like,申请号US19560602274-传众专利搜索

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发明名称	Method of manufacturing a box end thread protector for sucker rod couplings and the like
摘要
申请公布号	US2930118(A)	申请公布日期	1960.03.29
申请号	US19560602274	申请日期	1956.08.06
申请人	HIGGINS EDWARD F	发明人	HIGGINS EDWARD F.
分类号	E21B17/00	主分类号	E21B17/00
代理机构		代理人
主权项
地址

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