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
Retrievable well packers
摘要
申请公布号
US3398795(A)
申请公布日期
1968.08.27
申请号
US19650479966
申请日期
1965.08.16
申请人
OTIS ENGINEERING CORPORATION
发明人
ELLISTON THOMAS L.
分类号
E21B17/06;E21B33/128;E21B33/129
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
HYDRAULIC SYSTEM FOR FARM TRACTOR LIFT
METHOD OF PRODUCING AMPHOTERIC POLYELECTROLYTES
METHOD OF PURIFYING SPENT PICKLING BATH ESPECIALLY IN METALLURGY
DISK APPARATUS FOR ALIGNING AND FEEDING SEMI-FINISHED PRODUCTS
METERING-CUT-OFF VALVE
DEVICE FOR FOLDING INTERNAL AND EXTERNAL EDGES OF THE OBJECTS HAVING SEVERAL ANGLES AND SOLIDS OF REVOLUTION
METHOD OF QUANTITATIVE DETERMINATION OF INORGANIC,RADIOACTIVE IMPURITIES IN THE SOLUTIONS OF LABELLED PROTEINS PREPARATIONS
METHOD AND DEVICE FOR SHEET METAL CENTRING,ESPECIALLY FOR ELECTRIC MACHINE ROTORS
TRANSFORMER OUTPUT SYSTEM FOR WIDE-BAND AERIAL AMPLIFIER
ROTARY CHUCK KEY SEAT
METHOD OF HEATING COAL DERIVATIVE HYDROCARBON OILS AND MIXTURES CONTAINING SUCH OILS
METHOD OF DEWATERING POLYETHYLENE TEREPHTHALATE
APPARATUS FOR JOINING MACHINES,ESPECIALLY AGRICULTURAL MACHINES WITH QUICK-CLUTCH OF THREE-POINT TRACTOR SUSPENSION SYSTEM
BATH FOR ELECTRO-GALVANIZING AND POLISHING
LIQUID FLOW INTENSITY MEASURING SYSTEM
METHOD OF PRODUCING 2,2-AZOBISISOBUTYRAMIDE
DEVICE FOR ERECTING STACKS OF RECTANGULAR PRISM-SHAPED OBJECTS
METHOD OF PRODUCING MODIFIED UREA-FORMALDEHYDE RESINS
AUTOMATIC CONTROL SYSTEM,ESPECIALLY FOR TIMBER SEASONING PLANTS
METHOD OF OBTAINING NEW DERIVATIVE OF BENZIMIDAZOLE