Improvements in or relating to drill rods,申请号GB19620020816-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	Improvements in or relating to drill rods
摘要
申请公布号	GB1000138(A)	申请公布日期	1965.08.04
申请号	GB19620020816	申请日期	1962.05.30
申请人	SANDVIKENS JERNVERKS AKTIEBOLAG	发明人	HEISKANEW SAKARI;DAHLIN CURT VILHELM
分类号	E21B17/00	主分类号	E21B17/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

LIQUID CRYSTAL EXPOSURE DEVICE

LIQUID CRYSTAL EXPOSURE DEVICE

MANUFACTURE OF LIQUID CRYSTAL DISPLAY ELEMENT

LIQUID CONCENTRATION SENSOR

DIFFERENTIAL PRESSURE MEASURING DEVICE

DISPLAY DEVICE FOR SEARCHING TROUBLE POINT

IMMUNE NEPHELOMETRY AND MEASURING REAGENT USED THEREIN

TESTING METHOD FOR AIRTIGHTNESS OF MULTI-LAYERED BELLOWS

SEMICONDUCTOR DEVICE AND ITS MANUFACTURE

TEMPERATURE MEASURING DEVICE

RADIATION IMAGE CONVERSION PANEL

HEADER PLATE OF ALUMINUM HEAT EXCHANGER

FIREPROOF HEAT INSULATING DRAIN VERTICAL PIPE WITH INTERNAL SURFADE HELICAL RIB

CLUTCH BRAKE DEVICE

FOUR-STREAK ROW ENDLESS DIRECT DRIVE GUIDE UNIT

MANUFACTURE OF NONWOVEN FABRIC

VARIABLE DISPLACEMENT VANE PUMP