Isolier-Rohrleitung für unterirdische Bohrungen,申请号DE19823218729-传众专利搜索

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发明名称	Isolier-Rohrleitung für unterirdische Bohrungen
摘要
申请公布号	DE3218729(C2)	申请公布日期	1994.11.17
申请号	DE19823218729	申请日期	1982.05.18
申请人	SUMITOMO METAL INDUSTRIES, LTD., TOKIO/TOKYO, JP	发明人	BAKER, JOHN R., HOUSTON, TEX., US;CHENOWETH, DAVID V., HOUSTON, TEX., US;MCSTRAVICK, DAVID M., HOUSTON, TEX., US
分类号	E21B17/00;E21B36/00;F16L59/15;(IPC1-7):F16L59/14	主分类号	E21B17/00
代理机构		代理人
主权项
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