,申请号JP19900103360U-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
摘要
申请公布号	JPH0461190(U)	申请公布日期	1992.05.26
申请号	JP19900103360U	申请日期	1990.10.02
申请人		发明人
分类号	E21B21/14;E21B7/02;E21B15/00;E21B19/08;E21B21/00;(IPC1-7):E21C7/06;E21C11/02	主分类号	E21B21/14
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Dust separating apparatus of vacuum cleaner

Device of driving backlight unit and driving method therof

AN IMPROVED PICTURE FRAME

ECU management system and method

LEAF SPRING DEVICE HAVING EYE, LEAF SPRING DEVICE MANUFACTURING METHOD, AND SHOT PEENING APPARATUS

System and method for controlling blade

WHEEL BEARING FOR VEHICLE

Anti-sloshing apparatus

PIPE STRUCTURE AND LIQUEFIED NATURAL GAS STORAGE TANK HAVING THE SAME

Method for providing GUI for selecting broadcast program and AV device thereof

Ship ballast water treatment device having metal ion generator

HAIR STYLING IRON WITH RAISED FINS

Assembling Stone Column And Manufacturing Method Thereof

Overpressure valve

Photographing apparatus

Apparatus for processing digital image capable of multi-disiaplay using television and thereof method

A BASEBALL GAME MACHINE

Digital image processing apparatus comprising the function of holding image angle and the method of controlling the same