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
DRILLING HEAD
摘要
申请公布号
EP0944764(B1)
申请公布日期
2003.03.19
申请号
EP19970949845
申请日期
1997.12.16
申请人
DRESSER INDUSTRIES INC.
发明人
LAMINE, ETIENNE;DELWICHE, ROBERT
分类号
E21B10/46;E21B10/54;(IPC1-7):E21B10/54
主分类号
E21B10/46
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ESPUMADOR
SEMICONDUCTOR DEVICE AND PROCESS FOR FABRICATING SEMICONDUCTOR DEVICE
MICROORGANISM MEDIA AND METHOD FOR FABRICATING THE SAME
DISPOSITIVO ELECTROMECANICO PARA MONTAR UN MODULO ELECTRONICO EN UN PORTAMODULOS, ESPECIALMENTE PARA MONTAR UN INSTRUMENTO INDICADOR EMBUTIDO EN UN SALPICADERO
INTERNET COMMUNICATION SYSTEM
Treatment composition for reducing bleeding of acidic dyes from colored human hair
MAGNETIC CORE AND MAGNETIC CORE-USE ADHESIVE RESIN COMPOSITION
CONTROL VALVE
NUCLEIC ACID VACCINES FOR PREVENTION OF FLAVIVIRUS INFECTION
METHOD FOR RECORDING POSITION INFORMATION OF BROADCASTING SIGNAL, BROADCASTING SIGNAL RECEIVER CAPABLE OF RECORDING POSITION INFORMATION OF BROADCASTING SIGNAL, AND BROADCASTING SIGNAL TRANSMITTER
MUEBLE-ASIENTO CONVERTIBLE EN CAMA
Plate radiator
CERIUM BASED ABRASIVE MATERIAL AND ABRASIVE MATERIAL SLURRY, AND METHOD FOR PRODUCING CERIUM BASED ABRASIVE MATERIAL
CARBURETOR, VARIOUS TYPES OF DEVICES USING THE CARBURETOR, AND METHOD OF VAPORIZATION
ELECTRIC ACTUATOR
GAS-DETECTING APPARATUS
Radio transmission system with point-multipoint type topology enclosing stations suitable to operate according to multiple operation modes and according to multiple standards
DEVICE AND METHOD FOR ADHERING FRICTION MATERIAL OF CLUTCH PULLEY
SYSTEM AND METHOD FOR BACKLIGHTING CONTROL IN A WIRELESS COMMUNICATION DEVICE
CARDAN JOINT INCLUDING BALANCING DEVICE AND BALANCING WEIGHT FOR BALANCING DEVICE