CONE ROLLER TYPE HOLE WIDENER,申请号PL19790212766-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	CONE ROLLER TYPE HOLE WIDENER
摘要
申请公布号	PL121332(B1)	申请公布日期	1982.04.30
申请号	PL19790212766	申请日期	1979.01.10
申请人		发明人
分类号	E21B;E21B10/30;(IPC1-7):E21B10/30	主分类号	E21B
代理机构		代理人
主权项
地址

您可能感兴趣的专利

MANUFACTURE OF ORGANIC TRANSPARENT CONDUCTIVE FILM

MECHANICAL TRANSLATION DEVICE

KANA/KANJI CONVERTING DEVICE

MEMORY ACCESS SYSTEM FOR DISPLAY

IMAGE FORMING DEVICE

ELECTROPHOTOGRAPHIC SENSITIVE BODY

METHOD AND DEVICE FOR RESETTING TO ORIGINAL POINT

LIGHT WAVELENGTH CONVERTING DEVICE

COMPOSITION FOR LIQUID CRYSTAL ORIENTED FILM

PIEZOELECTRIC ACCELERATION SENSOR

THROUGH HOLE FILLING CONDITION INSPECTING DEVICE

ELECTRONIC WRISTWATCH EQUIPPED WITH DYNAMO

ENGINE CONTROLLER FOR VEHICLE

AMINOPHOSPHAZENE-BASE FLAMEPROOFING AGENT

ADHESIVE COMPOSITION FOR FLEXIBLE PRINTED CIRCUIT BOARD

CENTRIFUGAL PUMP

FUEL DELIVERY PIPE

REFORMER FOR MANUFACTURING TOWN GAS