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
Casing scraper
摘要
申请公布号
US2836251(A)
申请公布日期
1958.05.27
申请号
US19540470342
申请日期
1954.11.22
申请人
CLAYPOOL
发明人
CLAYPOOL ROBBINS M.;BEST DAVID M.
分类号
E21B37/02
主分类号
E21B37/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ROUTE GUIDE SYSTEM AND METHOD
STEERING DEVICE
SOLVENT REMOVER AND REMOVING METHOD
LOWER LIMB EXERCISE ASSIST DEVICE
POWER SEMICONDUCTOR SWITCH MODULE
TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT
ELECTROCHEMICAL DEVICE AND ITS MANUFACTURING METHOD
RESISTOR CHIP AND ITS PACKAGING METHOD
METHOD OF PROCESSING ROTOR OF ROTATING MACHINE
PERMANENT MAGNET ROTARY ELECTRIC MACHINE, ELECTRIC MACHINE SYSTEM FOR ON-BOARD ELECTRIC ACTUATOR EMPLOYNG IT, AND ELECTRIC MACHINE SYSTEM FOR ELECTRIC POWER STEERING SYSTEM
COOLING DEVICE FOR ROTARY ELECTRIC MACHINE
MULTIPLEX BROADCASTING RECEIVER
DIGITAL VIDEO SIGNAL RECORDING AND REPRODUCING DEVICE, RECORDING AND REPRODUCING METHOD THEREOF, DIGITAL VIDEO SIGNAL REPRODUCING APPARATUS, AND REPRODUCING METHOD THEREOF
AV SYSTEM, AMPLIFYING DEVICE, AND OPERATING PROGRAM OF THE DEVICE
RECORDING DEVICE, INFORMATION RECORDING MEDIUM, AND RECORDING METHOD
METHOD AND APPARATUS FOR IMAGE PROCESSING, AND RECORDING MEDIUM
FEED STRUCTURE IN ANTENNA ASSEMBLY FOR VEHICLE AND ANTENNA ASSEMBLY FOR VEHICLE
VIDEO DISPLAY DEVICE, VIDEO SIGNAL OUTPUT DEVICE, AND CHANNEL SELECTION METHOD FOR VIDEO DISPLAY DEVICE
RECORDING APPARATUS AND METHOD, RECORDING MEDIUM, AND PROGRAM
VOICE COMMUNICATION APPARATUS FOR AUTOMOBILE
