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
SYSTEM AND METHOD OF PROTECTING OPTICAL ELEMENTS FROM DOWN-HOLE FLUIDS
摘要
申请公布号
EP0658253(B1)
申请公布日期
2000.04.26
申请号
EP19940917449
申请日期
1994.05.20
申请人
DHV INTERNATIONAL, INC.
发明人
THOMPSON, JACK
分类号
E21B47/00;E21B47/01;(IPC1-7):G01V1/40
主分类号
E21B47/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
HYBRID CONTROL DEVICE
POSITION DETECTION DEVICE FOR ROBOT, ROBOTIC SYSTEM, AND POSITION DETECTION METHOD FOR ROBOT
MANIPULATOR WITH THREE DEGREES OF FREEDOM AND CONTROL METHOD FOR THE SAME
Foot Plate Device for An Artificial Foot
DEVICE AND METHOD FOR RESHAPING MITRAL VALVE ANNULUS
MULTI-AXIAL PEDICLE FIXATION ASSEMBLY AND METHOD FOR USE
ULTRAVIOLET LIGHT PACIFIER
Safe Disposable Injector with Changeable and Automatically Retractable Needle
Improved Sealing Barrier Arrangement
MEDICAL FLUID PUMP SYSTEMS AND RELATED COMPONENTS AND METHODS
Massage Table for Recumbent or Seated Person
METHOD AND SYSTEM FOR DETECTING CARDIAC ARRHYTHMIA
Therapeutic pillow
NOVEL PYRIDOPYRAZINE DERIVATIVES, PROCESS OF MANUFACTURING AND USES THEREOF
BARRIERS FOR FACILITATING BIOLOGICAL REACTIONS
Endless flexible members for imaging devices
METHODS FOR CONCOMITANT ADMINISTRATION OF COLCHICINE AND A SECOND ACTIVE AGENT
METHODS AND PHARMACEUTICAL COMPOSITIONS USEFUL FOR TREATING PSORIASIS
IFN TYPE-I PRODUCTION INHIBITOR AND METHOD FOR SCREENING FOR SAME
Heterocyclic-substituted 2-acetamido-5-aryl-1,2,4-triazolones and use thereof
