WELLHEAD WITH ECCENTRIC CASING SEAL RING,申请号GB19880028315-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	WELLHEAD WITH ECCENTRIC CASING SEAL RING
摘要
申请公布号	GB2213515(A)	申请公布日期	1989.08.16
申请号	GB19880028315	申请日期	1988.12.05
申请人	* VETCO GRAY INC	发明人	CHARLES D * BRIDGES
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

Gas turbine jet propulsion engine

A buckle and retractor assembly for a seat belt

Folding closures

Machine for tapping nut blanks and the like

Purification of nitriles by extractive distillation

An apparatus for discharging feed stock

3-(substituted phenyl) pyrrole derivatives and the preparation thereof

Solvent extraction method for removing salt from water

A hatch and hatch cover construction

Toy, amusement or educational device

Improvements in or relating to the winding of synthetic textile yarns or filaments

Ferrite memory device

Bulky filament yarn

Automatic vending machine

Fluoroalkyl silicon compounds

Improvements in or relating to closures for barrels

Charged particle extracting magnet for an accelerator

Improvements relating to the coating of metals

Improvements in and relating to artificial fibres

A process for the production of powders from plastics materials or synthetic waxes