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 DRILL BITS AND CUTTING ELEMENTS
摘要
申请公布号
GB8405181(D0)
申请公布日期
1984.04.04
申请号
GB19840005181
申请日期
1984.02.28
申请人
NL PETROLEUM PRODUCTS LTD
发明人
分类号
E21B10/46;(IPC1-7):E21B10/46
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
Device
IONTOPHORESIS SYSTEM
Method of transpoting a fluid such as dry gas susceptible for the formation of hydrates
Door lock apparatus with automatic door closing mechanism
Interactive report generation system and method of operation
Forming sutures in three-dimensional weft-knitted fabric
Rear impact occupant protection apparatus
Apparatus and method for encoding data
Battery receptacle module
THE USE OF PARAWATER AS DISPERSING AGENT
Optical filtering
Apparatus and methods for seismic data processing
Packet transmission seraching
Cash settlement machine
USE OF 2-(2-ALKYLPHENYLAMINO)-OXAZOLINES, -THIAZOLINES AND -IMIDAZOLINES AS ALPHA 2 ADRENERGIC AGENTS
CATAMENIAL ABSORBENT STRUCTURES
Locking of letterboxes
Overbased metal-containing detergents
Thermocouple probe
Air conditioning system
