COUPLING FOR DRILL PIPES,申请号EP19980920452-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	COUPLING FOR DRILL PIPES
摘要
申请公布号	EP1071863(A1)	申请公布日期	2001.01.31
申请号	EP19980920452	申请日期	1998.04.14
申请人	WELLTEC APS	发明人	HALLUNDBAEK, JOERGEN
分类号	E21B17/046;(IPC1-7):E21B17/02	主分类号	E21B17/046
代理机构		代理人
主权项
地址

您可能感兴趣的专利

A Linear Type Evaporator with a Mixing Zone

CARGO FOR LIQUEFIED GAS CARRIER SHIP AND MANUFACTURING METHOD THEREOF

Master recording medium for magnetic transferring servo pattern to the magnetic recording medium and method for manufacturing the master recording medium

Supporting structure for cryogenic facility and ship having cryogenic facility

RNA aptamer that selectively binds to extracellular domain of PAP

DEVICE FOR MANUFACTURING A RUBBER STRIP

ANTISTATIC DANPLA SHEET AND MANUFACTURING METHOD THEREOF

METHOD FOR MEASURING BACKHAUL THROUGHPUT FOR LTE SMALL CELL

STRUCTURE OF DAVIT FOR HANDLING FLARE TIP

APPARATUS AND METHOD FOR DETECTING BAD LOADING OF VEHICLE USING WAVE

VOC SENSOR BASED ON GRAPHENE FUNCTIONALIZED BY PORPHYRINS AND METHOD FOR MANUFACTURING THE SAME

FABRICATION METHOD FOR SUBSTRATE HAVING COPPER THIN LAYER AND PRINTED CIRCUIT BOARD

PH SENSING DEVICE FOR WASTE WATER

FLIGHT ELECTRIC THERMAL ANTI DEICING SYSTEM HAVING A NUMERICAL SIMULATION FUNCTION AND PROCESSING METHOD FOR THE SAME

SERVICE PLUG FOR HIGH VOLTAGE BATTERY

SYSTEM AND METHOD FOR COMPLEX MALODOR ANALYSIS

COMPOSITIONS COMPRISING HOMOHARRINGTONIN FOR IMPROVING SKIN AGING OR IMPROVING SKIN WRINKLES

MARINE GENERATING UNITS USING THE VIBRATION OF THE MAIN ENGINE