WELL CLEANING WITH MIXED LIQUEFIED PROPANE AND BUTANE SOLVENT,申请号USD3477513-传众专利搜索

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发明名称	WELL CLEANING WITH MIXED LIQUEFIED PROPANE AND BUTANE SOLVENT
摘要
申请公布号	US3477513(A)	申请公布日期	1969.11.11
申请号	USD3477513	申请日期	1968.05.08
申请人	PETRO WELL SERVICE INC.	发明人	JAMES D. FERGUSON
分类号	E21B37/00;(IPC1-7):E21B21/00	主分类号	E21B37/00
代理机构		代理人
主权项
地址

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