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
Rotary drilling assembly
摘要
申请公布号
GB2306528(A)
申请公布日期
1997.05.07
申请号
GB19960021205
申请日期
1996.10.11
申请人
* CAMCO DRILLING GROUP LIMITED
发明人
JOHN MICHAEL * FULLER
分类号
E21B4/16;E21B4/20;E21B10/26;(IPC1-7):E21B4/00
主分类号
E21B4/16
代理机构
代理人
主权项
地址
您可能感兴趣的专利
LIGHT GUIDE PLATE, SURFACE LIGHT SOURCE DEVICE USING IT, AND DISPLAY DEVICE USING IT
POLARIZER AND LIQUID CRYSTAL DISPLAY DEVICE
ORIGINAL PLATE FOR LITHOGRAPHIC PRINTING AND PRINTING METHOD USING THE SAME
PHOTOSENSITIVE ELEMENT, METHOD OF FORMING RESIST PATTERN USING THE SAME, AND METHOD OF MANUFACTURING PRINTED WIRING BOARD
OPTICAL COMPENSATING FILM, INTEGRATED TYPE ANGLE-OF-FIELD COMPENSATION POLARIZATION PLATE, AND LIQUID CRYSTAL DISPLAY
FILE TRANSFER PROGRAM
CARBON NANOTUBE AGGREGATE, AND CARBON NANOTUBE SETTING DEVICE WITH THE SAME SET THEREIN
TOLL COLLECTING SYSTEM AND METHOD
NON-CONTACT TICKET PROCESSING EQUIPMENT
VERTICALLY-PLEATED PAPER-MADE CONTAINER AND MANUFACTURING METHOD FOR THE SAME
PERSONAL IDENTIFICATION DEVICE FOR VEHICLE
IMAGE FORMING APPARATUS
FUEL FEEDING DEVICE
CONNECTOR, AND MANUFACTURING METHOD OF CONNECTOR
CERIUM TYPE ABRASIVE AND MANUFACTURING METHOD OF CERIUM TYPE ABRASIVE, AND QUALITY EVALUATION METHOD OF CERIUM TYPE ABRASIVE
FLANGE COVER FOR HANDRAIL
SYSTEM AND METHOD FOR OBJECT DISTRIBUTION THROUGH COMMUNICATION SYSTEM
WAVELENGTH CONVERSION METHOD AND WAVELENGTH CONVERSION APPARATUS
DEFLECTION METHOD, DEFLECTION APPARATUS AND LASER PROCESSING APPARATUS
DISPLAY DEVICE
