首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
A NIPPLE PROTECTOR SLEEVE FOR USE IN A WELL CONDUIT
摘要
申请公布号
GB2163792(B)
申请公布日期
1987.09.30
申请号
GB19850019146
申请日期
1985.07.30
申请人
* CAMCO INCORPORATED
发明人
WILLIAM DONALD * EATWELL
分类号
E21B23/02;(IPC1-7):E21B23/02
主分类号
E21B23/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Wireless self-sufficient monitoring system for a door lock mechanism
Energy storage system and method of controlling the same
Charging apparatus and method for controlling charging apparatus
Standby battery box for electric cylinder
System and method for protecting a power consuming circuit
Battery power delivery module
Method for operating a brushless electric motor
LED fluorescent lamp
Large area lighting system with wireless control
Lamp control system, lamp power-saving system and method therefor
Self-light emitting display unit and electronic device
Production machine having an operating state warning light device
Actuator assembly having a motor with heat dissipation
Advanced renewable energy harvesting
System and method for phase balancing in a power distribution system
Wind turbine having power electronics in the nacelle
Ice detection method and system for wind turbine generators using sun radiation sensors
Electronic component implementing structure intermediate body, electronic component implementing structure body and manufacturing method of electronic component implementing structure body
Interconnect structure and method
Semiconductor device and manufacturing method of the same