ROERFANGER I ET ROTASJONSBORD I EN BORERIGG.,申请号NO19900002864-传众专利搜索

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发明名称	ROERFANGER I ET ROTASJONSBORD I EN BORERIGG.
摘要
申请公布号	NO902864(D0)	申请公布日期	1990.06.27
申请号	NO19900002864	申请日期	1990.06.27
申请人	VN-I I PK INST NEFTYANOGO MASHINOSTROENIA (VNIINEFTEMASH)	发明人	GLUKH, ALEXANDR ARONOVICH;SEMENETS, NINA ALEXANDROVNA;SHESTOV, ANATOLY GEORGIEVICH
分类号	E21B19/10;E21B19/18;(IPC1-7):E21B/	主分类号	E21B19/10
代理机构		代理人
主权项
地址

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