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
Pipe releasing method
摘要
申请公布号
US2670927(A)
申请公布日期
1954.03.02
申请号
US19510232498
申请日期
1951.06.20
申请人
ROBERTHA EDWARDS FRANCES
发明人
EDWARDS FRANCES ROBERTHA
分类号
E21B17/06
主分类号
E21B17/06
代理机构
代理人
主权项
地址
您可能感兴趣的专利
TURBINE MOVING BLADE AND ITS PRODUCTION
CATHODE-RAY TUBE FOR DISPLAY LIGHT SOURCE
FLUID HEATING DEVICE
HEATING COOKER
NOISE REDUCTION DEVICE OF MARINE VESSEL PROPELLER
OVERSAMPLING TYPE A/D CONVERTER
TEST CIRCUIT FOR CIRCUIT BLOCK
APPARATUS FOR MEASURING CONCENTRATION OF MICROORGANISM
PARTICLE ANALYZER
ATOMIC ABSORPTION SPECTROPHOTOMETER
APPARATUS FOR MEASURING PHOTOELECTRIC ELEMENT
WEIGHT DETECTOR
PHASE MODULATION TYPE OPTICAL FIBER GYROSCOPE
ATTITUDE DETECTOR
FUEL PUMP UNIT IMMERSED IN TANK
OVERSPEED PREVENTIVE DEVICE FOR INTERNAL COMBUSTION ENGINE
ELECTROPLATING DEVICE
HEAT TREATMENT OF BETA-TITANIUM ALLOY
ALLOY FOR REFINING ALUMINUM GRAIN AND ITS PRODUCTION
COMMON COMBUSTION CHAMBER TYPE INTERNAL COMBUSTION ENGINE
