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
Control head
摘要
申请公布号
US1875793(A)
申请公布日期
1932.09.06
申请号
US19300419314
申请日期
1930.01.08
申请人
THE NATIONAL SUPPLY COMPANY
发明人
YOUNG FORREST JOSEPH;LONG SPENCER WILLIAM
分类号
E21B33/04
主分类号
E21B33/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Electronic apparatus
IMAGING LENS AND IMAGING APPARATUS
Objective Lens System
Mirror device and MEMS device comprising layered electrode
OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDNG APPARATUS, AND OPTICAL INFORMATION RECORDING METHOD
Methods and Systems to Detect Changes in Multiple-Frequency Band Sonar Data
LENS UNIT AND IMAGE CAPTURING DEVICE
LATENT IMAGE FORMING FILM, LATENT IMAGE IDENTIFYING KIT AND METHOD FOR IDENTIFYING LATENT IMAGE
Display panel apparatus
ELECTROSTATICE CHUCK WITH ANTI-REFLECTIVE COATING, MEASURING METHOD AND USE OF SAID CHUCK
PHOTOMETRIC APPARATUS AND AUTOMATIC ANALYZER
PROJECTION DISPLAY APPARATUS AND DISPLAY METHOD
PROJECTOR WITH COOLING CONFIGURATION
ELECTRONIC DEVICE WITH SLIDEABLE COVERS
CAPACITIVE LOAD DRIVING CIRCUIT AND LIQUID DROPLET JETTING APPARATUS
SYSTEM AND METHOD FOR DETECTING A FALLING STATE OF AN ELECTRONIC DEVICE
PRESCRIPTION COMPLIANCE DEVICE AND METHOD OF USING DEVICE
MEASURING APPARATUS FOR PERFORMING POSITIONAL ANALYSIS ON AN INTEGRATED CIRCUIT CARRIER
Speed reporting for providing conditional driver treatment
Isolation Magnetic Devices Capable Of Handling High Speed Communications
