Casing hanger assembly,申请号US19490096942-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	Casing hanger assembly
摘要
申请公布号	US2568581(A)	申请公布日期	1951.09.18
申请号	US19490096942	申请日期	1949.06.03
申请人	GRAY TOOL COMPANY	发明人	CRAIN ROBERT L.
分类号	E21B33/04	主分类号	E21B33/04
代理机构		代理人
主权项
地址

您可能感兴趣的专利

STABLE TAUROLIDINE ELECTROLYTE SOLUTION

COMMON KEY GENERATION TERMINAL, KEY SHARING SYSTEM, AND COMMON KEY GENERATION METHOD

FILM DEPOSITION SYSTEM AND FILM DEPOSITION METHOD

PORTABLE ELECTRONIC APPARATUS

LIQUID CRYSTAL DISPLAY DEVICE

IMAGING LENS AND IMAGING DEVICE USING THE SAME

MATERIAL TESTING MACHINE SYSTEM

WASHING MACHINE

PRODUCTION METHOD OF RE123-BASED OXIDE SUPERCONDUCTOR, AND THE RE123-BASED OXIDE SUPERCONDUCTOR

WORKPIECE TRANSFERRING DEVICE

CONTROL DEVICE, AIR CONDITIONER AND REFRIGERATING DEVICE

NANO FAR-INFRARED RAY BELT

HERMETIC COMPRESSOR

POWER SUPPLY CONTROL CIRCUIT

LINEAR MOTOR DRIVING AND FEEDING DEVICE

SURFACE MOUNTED PIEZOELECTRIC OSCILLATOR AND METHOD FOR MEASURING PERFORMANCE THEREOF

SIGNAL PROCESSING APPARATUS

TELEPHONE DEVICE PERFORMING INTERRUPT CALL REQUEST NOTIFICATION