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
Shale diverting means for a sealed bearing drill bit
摘要
申请公布号
US5056610(A)
申请公布日期
1991.10.15
申请号
US19900583902
申请日期
1990.09.17
申请人
SMITH INTERNATIONAL, INC.
发明人
OLIVER, MICHAEL S.;CAWTHORNE, CHRIS E.;ERPENBECK, GARY
分类号
E21B10/22;E21B10/25
主分类号
E21B10/22
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Arterial blood filter
MPEG images decoding and reverse display procedure and device, video pilot circuit and decoder including such a device
METHOD AND APPARATUS FOR DC OFFSET REMOVAL
ABETA BINDING MOLECULES
RECOMBINANT TYPE II RESTRICTION ENDONUCLEASES, MMEI AND RELATED ENDONUCLEASES AND METHODS FOR PRODUCING THE SAME
METHOD AND APPARATUS FOR INTERROGATING FIBER OPTIC SENSORS
SUBSTITUTED OXA-DIAZA-SPIRO-[5.5]-UNDECANONE DERIVATIVES AND THEIR USE AS NEUROKININ ANTAGONISTS
Spring support with a height adjustable spring plate
Personal care products comprising cyclodextrin as fragrance-complexing material
CYCLOPROPYL FUSED INDOLOBENZAZEPINE HCV NS5B INHIBITORS
Substituted pyridinyl and pyrimidinyl derivatives as modulators of metabolism and the treatment of disorders related thereto
N-[(1,5-diphenyl-1H-pyrazol-3-yl)methyl]sulfonamide derivatives antagonists of the CB1 cannabinoids receptors
Light-informative module
METHOD FOR THE PRODUCTION OF POLYMER FOAMS BASED ON REACTIVE POLYCONDENSATION RESINS
UNIVERSAL REMOTE LIGHTING SYSTEM
Locking device for freight container
USE OF AN OPTICAL FILTER FOR THE PREVENTION OF MELATONIN SUPPRESSION BY LIGHT AT NIGHT
Low-density steel having good drawability
Engineering nicking endonucleases from type IIs restriction endonucleases
METHOD FOR EQUIPMENT QUALITY CHECK, METHOD AND DEVICE FOR AUTOMATICALLY ADAPTING QUALITY CHECK DATA
