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
Flushing means for drilling tools
摘要
申请公布号
US5040621(A)
申请公布日期
1991.08.20
申请号
US19900503813
申请日期
1990.04.03
申请人
UNIROC AKTIEBOLAG
发明人
LOEF, STIG U.
分类号
E21B10/60;E21B7/20;E21B10/38;E21B10/66;E21B21/10;E21B34/12
主分类号
E21B10/60
代理机构
代理人
主权项
地址
您可能感兴趣的专利
SLIP CONTROL FOR HELICALLY WOUND PIPES
PARTICULATE FILTER MODULE
MACHINING TOOL WITH WEAR DETECTION AND SYSTEM FOR MEASURING WEAR
HIGH-SPEED ELECTRONIC CIRCUIT HAVING A CASCODE CONFIGURATION
HUMAN GRANULOCYTE-MACROPHAGE COLONY STIMULATING FACTOR AND MUTEINS THEREOF
Drafting galette mounted overhung
SPREADER FOR PARTICULATE MATERIAL
METHOD OF MANUFACTURING ELECTROCHEMICAL CELL
Werkzeug zum Ein- und Aushaengen von Bremsfedern in Radnaben von Nutzfahrzeugen
METHOD FOR RECORDING FREQUENCY CHARACTERISTIC MEASURING TAPE
LUMINANCE SIGNAL PROCESSING CIRCUIT
RE-DIALING SYSTEM
BRIDGING T-TYPE VARIABLE RESISTANCE ATTENUATOR
DEFORMABLE COMPOUND BEAM ANTENNA
MICROWAVE SEMICONDUCTOR AMPLIFIER
DISCONNECTOR
VOLTAGE CONTROLLED CRYSTAL OSCILLATOR
DATA COMMUNICATION DEVICE
WEATHER FORECAST ANNOUNCING DEVICE
REPRODUCING WAVEFORM EQUALIZING CIRCUIT