METHOD OF CLEANING WELL SHAFTS,申请号EP19890250124-传众专利搜索

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发明名称	METHOD OF CLEANING WELL SHAFTS
摘要
申请公布号	EP0376422(A3)	申请公布日期	1991.10.30
申请号	EP19890250124	申请日期	1989.12.20
申请人	CHARLOTTENBURGER MOTOREN- UND GERATEBAU KG H.W. PAUL	发明人	PAUL, KERRY F., DIPL.-ING.
分类号	E21B37/06;E21B47/10;(IPC1-7):E21B37/06;E03B3/15	主分类号	E21B37/06
代理机构		代理人
主权项
地址

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