SYSTEM OG FREMGANGSMAATE FOR STYRT RETNINGSBORING.,申请号NO19870002419-传众专利搜索

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发明名称	SYSTEM OG FREMGANGSMAATE FOR STYRT RETNINGSBORING.
摘要
申请公布号	NO872419(A)	申请公布日期	1987.08.10
申请号	NO19870002419	申请日期	1987.06.10
申请人	SMITH INTERNATIONAL INC	发明人	GECZY, BELA;DULUCIA, FRANK
分类号	E21B;(IPC1-7):E21B/	主分类号	E21B
代理机构		代理人
主权项
地址

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