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
Locating device for use in boreholes
摘要
申请公布号
US2200505(A)
申请公布日期
1940.05.14
申请号
US19380227543
申请日期
1938.08.30
申请人
J. ELDON PEEK
发明人
KERR RALPH L.
分类号
E21B47/04
主分类号
E21B47/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ELECTROMAGNETIC TYPE FUEL INJECTION VALVE
BACKUP CONTROL DEVICE FOR PROCESSOR
CONTROL DEVICE FOR AIR-FUEL RATIO OF ENGINE
HYDRAULIC CONTROLLER AND ITS CONTROLLING METHOD
ROTARY COMPRESSOR
EXHAUST EMISSION CONTROL DEVICE
ERECTED FRAME WITH SAFETY NET
HEAT INSULATING BOARD
EXTRUSION-MOLDED ROOF TILE
METHOD OF ATTACHING PLATE-LIKE BUILDING MATERIAL
APPLICATION OF PROTECTIVE STRUCTURE OF SLOPE
VALVE MECHANISM
APPARATUS FOR INSERTING AND INSTALLING TRAVELER
SURFACE TREATMENT OF SPUTTERED ALUMINA FILM
EXTERNAL STAINLESS STEEL SHEET PROVIDED WITH ANTIDAZZLE CHARACTERISTIC AND CORROSION RESISTANCE
ZR BASE ALLOY EXCELLENT IN CORROSION RESISTANCE
PRODUCTION OF CRYSTALLINE GRAIN REFINED ALLOY
MANUFACTURE OF STEEL SHEET FOR ENAMELING WITH LESS LUGGING
ANODIZED BUILDING MATERIAL
DIBLOCK COPOLYMER CONTAINING PHENOLIC HYDROXYL AND ITS PRODUCTION
