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
Lock device for well tools
摘要
申请公布号
US2450822(A)
申请公布日期
1948.10.05
申请号
US19440531237
申请日期
1944.04.15
申请人
BAKER OIL TOOLS, INC.
发明人
BAKER AARON A.
分类号
E21B33/129
主分类号
E21B33/129
代理机构
代理人
主权项
地址
您可能感兴趣的专利
A SLURRY AND WASH LIQUID DISTRIBUTOR
Farboptimierter Bildsensor
FILM FOR SOLAR CELL REAR SURFACE SEALING SHEET
Polsterlagenanordnung für ein Körperschutzpolster und Verfahren zu deren Herstellung
IMPROVEMENTS IN LEAD-ACID BATTERY CONSTRUCTION
VORRICHTUNG ZUM TRENNEN VON MOTOR-KURBELGEHÄUSEABSCHNITTEN UND VERFAHREN FÜR DASSELBE
Vorrichtung zum Verbinden zweier Bauteile
Verfahren zur Herstellung von Verbundmetall-Halbzeugen
MODULAR CARPET SYSTEMS
VACUUM-OPERATED RETRACTABLE SAFETY SYRINGE
ARTICLE -HANDLING MACHINE
APPARATUS FOR NON-INVASIVE MEASUREMENT OF PROPERTIES OF A FLUID FLOWING IN A TUBING HAVING A SMALL INNER DIAMETER PASSAGE
SUSPENSION DEVICE WITH EXTENSION ARM FOR FLAGS
METHOD FOR TRANSMITTING CHANNEL STATUS INFORMATION AND USER EQUIPMENT, AND METHOD FOR RECEIVING CHANNEL STATUS INFORMATION AND BASE STATION
CONTROL DEVICE FOR AN AIR SUPPLY SYSTEM AND METHOD FOR CONTROLLING OR REGULATING AN AIR SUPPLY SYSTEM
Data Providing Method by LED Infomation Code
Ru-Zeolite based Catalyst for converting sugar to sugar alcohols by catalytic hydrogenation, Preparing method of the same and Converting sugar to sugar alcohols using the same
RETRACTABLE COLUMN AND METHOD OF FORMING
MULTIFUNCTIONAL FLOWER CONTAINER
REMOTELY-ACTUATED SEAT BELT BUCKLE
