DRILLING BIT ROTATION FREQUENCY SENSING HEAD,申请号SU19894767537-传众专利搜索

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发明名称	DRILLING BIT ROTATION FREQUENCY SENSING HEAD
摘要
申请公布号	SU1689598(A1)	申请公布日期	1991.11.07
申请号	SU19894767537	申请日期	1989.12.11
申请人	SIBIRSKIJ NII NEFTYANOJ PROMYSHLENNOSTI	发明人	SAVINYKH YURIJ A,SU;YABLOKOV EVGENIJ S,SU
分类号	E21B45/00;E21B47/08	主分类号	E21B45/00
代理机构		代理人
主权项
地址

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