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
Drill collar
摘要
申请公布号
US2676820(A)
申请公布日期
1954.04.27
申请号
US19510248008
申请日期
1951.09.24
申请人
REED ROLLER BIT COMPANY
发明人
BOICE ELVIN G.
分类号
E21B17/042;E21B17/16;F16L55/00
主分类号
E21B17/042
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Fremgangsmate for fremstilling av para-fenylalkynyl-benzaldehyder
Fremgangsmate ved fremstilling av et gipsplateprodukt med forbedret vannresistens
LOW BITRATE ENCODING/DECODING METHOD AND APPARATUS
Bracelet acts as reservoir for perfume which a diffusor can disperse and is internally hollow, being threaded around the wrist of person
Front plate fixture of lock casing involves front and second side plates parallel to each other and located crossways to front plate, plastic peripheral wall extending between side plates, first connecting components to front plate
Apparatus for rolling up material in strip form onto roller-shaped object comprises rolling shaft with at least two elongated receiver components, each with free end
VIDEO SIGNAL PROCESSING CIRCUIT AND DISPLAY APPARATUS COMPRISING THEREOF
ENZYME INHIBITING ADHESIVES.
A GRIP STRUCTURE OF DISPLAY DEVICE
METHOD FOR SETTING TIME SYNCHRONIZATION OR SLOT BETWEEN BASE STATION AND MOBILE COMMUNICATION TERMINAL AND MOBILE COMMUNICATION TERMINAL OF ENABLING THE METHOD
LOCKING DEVICE FOR COVER PLATE OF BAKE UNIT IN SPINNER EQUIPMENT
METHOD AND APPARATUS FOR ESTIMATING TIMING ERROR AND FREQUENCY OFFSET OF HPI SYSTEM
SYSTEMS AND METHODS FOR EXPOSING PROCESSOR TOPOLOGY FOR VIRTUAL MACHINES
Combined Power Station
APPARATUS AND METHOD FOR FILTERING SMS AND WIRELESS COMMUNICATION TERMINAL AND METHOD USING IT
UNIVERSAL MULTIMEDIA ACCESS SYSTEM
IEEE1394 INTERFACE UNIT FOR CONSTRUCTION OF HOME BACKBONE NETWORK
APPARATUS FOR EFFICIENT PEGC IN UMTS SYSTEM
USING DOMAIN DIALOGUE MODEL AND LANGUAGE MODEL IN INTELLIGENT ROBOT SPEECH RECOGNITION SERVICE DEVICE AND METHOD
Digital picture data address generator
