OIL WELL PROTECTOR,申请号USD3484141-传众专利搜索

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发明名称	OIL WELL PROTECTOR
摘要
申请公布号	US3484141(A)	申请公布日期	1969.12.16
申请号	USD3484141	申请日期	1967.06.19
申请人	CHARLES H. COLLETT	发明人	CHARLES H. COLLETT
分类号	E21B17/10;(IPC1-7):F16C1/26;F16C17/00;F16C29/00	主分类号	E21B17/10
代理机构		代理人
主权项
地址

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