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
OVERCENTER VALVE CONTROL SYSTEM AND METHOD FOR DRILLING
摘要
申请公布号
CA2019635(A1)
申请公布日期
1991.02.25
申请号
CA19902019635
申请日期
1990.06.22
申请人
INGERSOLL-RAND COMPANY
发明人
HAMNER, JEFFREY W.
分类号
E21B19/086;E21B44/02
主分类号
E21B19/086
代理机构
代理人
主权项
地址
您可能感兴趣的专利
PROCESS FOR PREPARING MATERIAL FOR ACOUSTIC MACHINES AND INSTRUMENTS OF THE STONCTUS USING CERAMIC
GRINDING TUBE MILL
PROCESS FOR MAKING FILM FROM LOW DENSITY ETHYLENE HYDROCARBON COPOLYMER
APPARATUS FOR SEPARATION OF MIXTURES OF GASES
FREMGANGSMAADE TIL FREMSTILLING AF ALGINATFIBERMATERIALE SAMT DERAF FREMSTILLEDE PRODUKTER
ENGINE SPEED CONTROL UNIT
CARBAPENEM DERIVATIVES
CINTA Y MAQUINA PARA CONSTRUIR TUBOS CON DICHA CINTA Y TUBOSOBTENIDOS
DERIVADOS DE ISOQUINOLINA.
ELECTRONIC ENGINE CONTROLLER
METHOD OF PRODUCING THROUGH HOLE PRINTED CIRCUIT BOARD
METHOD OF PRODUCING ELECTRONIC PART
PICTURE DISPLAY
CONTROLLER FOR CUTTING OF ROTARY CUTTER
BALANCING MECHANISM OF ARM IN ROBOT
MANUFACTURE OF IMPROVED PVA FILM AND TOOL FOR CONSERVING FOOD
PREPARATION OF COLD DRINK OF GREEN TEA
APPARATUS FOR AUTOMATICALLY CONTROLLING LONG AND SHORT LEVER OF COMBINE
METHOD OF CONTACTING CONDUCTIVE WIRE
OPERATION COIL ASSEMBLY FOR ELECTROMAGNETIC CONTACTOR
