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
Impact tool
摘要
申请公布号
GB2334056(A)
申请公布日期
1999.08.11
申请号
GB19990009360
申请日期
1997.10.27
申请人
* BAKKE OIL TOOLS A/S
发明人
STIG * BAKKE
分类号
E21B4/14;E21B31/113;(IPC1-7):E21B31/113
主分类号
E21B4/14
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Drive platform assembly with rotatable mounting brackets and automatic grounding bracket
Prevention of simultaneous transmitter operation in a ground radio transmitting and receiving apparatus
Adaptive polling system by generating sequence of polling signals whose magnitudes are functionally related to the occurrence of the busy signal
Memory storage access control circuit for coupled mask-programmed microcontrollers
Automatic speech recognition (ASR) processing using confidence measures
Method of and apparatus for exposing data on X-ray films
Read/write head positioning device
Method of forming image using magnetic developer with high volume resistivity
Lens-fitted photo film unit
Level converting circuit for reducing an on-quiescence current
Digital processing method for parameter estimation of synchronous, asynchronous, coherent or non-coherent signals
Camera
Multiple slope analog-to-digital converter having increased linearity
TEM waveguide arrangement
Heatable gas component concentration sensor for motor vehicle exhausts
Compact, low cost, low precision guides for ring=spinning rail section
Dynamic verification of handwritten character by weighting of strokes
Closed position setting arrangement for proportional path valve
Enlargement scheme and procedure for depth of field area in optical image
Gas heated personal appliance, such as curling tongs, curling brush, hair dryer, epilator or household appliance
