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
Rock bit with an extended centre jet
摘要
申请公布号
GB2314864(A)
申请公布日期
1998.01.14
申请号
GB19970013381
申请日期
1997.06.26
申请人
* SMITH INTERNATIONAL INC
发明人
DENNIS * CIANEROS;MICHAEL SMITH * OLIVER;ALAN W * LOCKSTEDT;PER I * NESE;GARY R * PORTWOOD;MICHAEL A * SIRACKI
分类号
E21B10/16;E21B10/18;(IPC1-7):E21B10/18
主分类号
E21B10/16
代理机构
代理人
主权项
地址
您可能感兴趣的专利
COMMUNICATION SYSTEM
COMMUNICATION SYSTEM
VOLTAGE-FREQUENCY CONVERTER
SEMICONDUCTOR DEVICE
MANUFACTURE OF SEMICONDUCTOR DEVICE
PYROELECTRIC TYPE HEATING IMAGE CAMERA TUBE TARGET
MAGNETIC BUBBLE TRANSFER GATE
DATA PROCESSING SYSTEM
MAGNETIC RECORDING MEDIUM
MANUFACTURE OF THIN FILM MAGNETIC HEAD
STYLUS TIP CLEANING DEVICE IN ELECTROSTATIC CAPACITY VARIATION DETECTING TYPE REPRODUCING DEVICE
STEREOSCOPIC PICTURE DISPLAY DEVICE
FREQUENCY PRESET TYPE SONOBUOY
METHOD FOR MEASURING TEMPERATURE DISTRIBUTION
RELEASE AGENT
ENERGIZING DEVICE USED FOR INTEGRATED CIRCUIT DEVICE
COLOR PHOTOGRAPHIC SENSITIVE SILVER HALIDE MATERIAL
SEPARATION MEMBRANE
DIAGNOSIS OF READING CHANNEL
VOICE SYNTHESIZER WITH RECORDING/REPRODUCTION FUNCTION