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
WELLHEAD DEVICE FOR SEALING SUBSURFACE OIL PUMP ROD
摘要
申请公布号
SU1696672(A1)
申请公布日期
1991.12.07
申请号
SU19894760236
申请日期
1989.10.20
申请人
STADNICHUK SERGEJ N,SU;STADNICHUK YURIJ M,SU
发明人
STADNICHUK SERGEJ N,SU;STADNICHUK YURIJ M,SU
分类号
E21B33/03
主分类号
E21B33/03
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Process and device for detecting weight applied on a crane arm
Strapping machine with self opening end-chute
Through anchor and method of manufacture thereof
A Clutch Mechanism for a Torque Screwdriver
SELF-DESTRUCTING SYRINGE
Cleaning assembly
Method and apparatus for assisting vehicle operator
Super-large-effective-area (SLA) optical fiber and communication system incorporating the same
Liquid ring gas pump
LYTIC ENZYME
PIPETTE WITH TIP CONTAINER
Machine tool
TYPE CC CHEMOKINE-LIKE PROTEIN
CHAPERONIN 10
POLYESTER RESIN FOR POWDER COATING
DENTAL CLEANING AGENTS
FOLDABLE SHEET ASSEMBLY
Analyzer having concentric rotors
Method for reconstruction of gain/phase-maps of phased array antenna transmit/receive-modules
Gear shift control method for an automatic transmission