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
Apparatus for making casing and formation tests in wells
摘要
申请公布号
US2107457(A)
申请公布日期
1938.02.08
申请号
US19360085187
申请日期
1936.06.15
申请人
DON SHAFFER TOOL CORPORATION
发明人
STONE CLIFFORD E. VAN
分类号
E21B49/08
主分类号
E21B49/08
代理机构
代理人
主权项
地址
您可能感兴趣的专利
LOSGORANDE AV FASTSITTANDE FISKEDRAG
AVLASTNINGSORGAN VID EN TRERTRANSPORTOR FOR LANGSTRECKTA FOREMAL, EXEMPELVIS TIMMERSTOCKAR
SHAMPOO PER CAPELLI TIPO SPRAY.
TOVAGLIOLO IN CARTA PARTICOLARMENTE PER USO BAR.
RINFORZO RICAMBIABILE PER GUANTI DA LAVORO.
TRASPORTATORE PARTICOLARMENTE PER MACCHINE MULTILAME PER LAVORAZIONI DI LEGNO.
HYDROGEN/OXYGEN GAS GENERATOR IN WHICH HYDROGEN GAS FLAME IS CONTROLLED
DIVIDING CIRCUIT
ION SELECTIVE ELECTRODE APPARATUS AND FLOWING TYPE ION ANALYTICAL APPARATUS
RECORD
ELECTRONIC MUSICAL INSTRUMENT
AIR CONDITIONER
TEMPERATURE CONTROLLER FOR WATER BOILER
EXPOSING SYSTEM OF ELECTROPHOTOGRAPHIC COPYING MACHINE
REINFORCING MEMBER FOR JUNCTURE OF OPTICAL FIBERS
FIXING METHOD OF OPTICAL FIBER BUNDLE
COPYING-PROOF ORIGINAL
WATER/GLYCOL-BASE HYDRAULIC OIL
EQUIPMENT FOR GASIFICATION OF COAL OR THE LIKE
LIQUID CHEMICAL MIXER FOR DETERMINING FORMALIN IN ELECTROLESS COPPER PLATING BATH
