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
Casing packer
摘要
申请公布号
US2177601(A)
申请公布日期
1939.10.24
申请号
US19370120646
申请日期
1937.01.15
申请人
GEORGE P. VERRETT
发明人
SMITH WILLIAM W.
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
您可能感兴趣的专利
MANUFACTURE OF SEMICONDUCTOR DEVICE
SEMICONDUCTOR PHOTODETECTOR AND MANUFACTURE THEREOF
FREMGANGSMAADE TIL FREMSTILLING AF FORSENDELSESKLARE PAKKER AF I SKAELFORMATION AFGIVNE TRYKTE PRODUKTER OG PAKKE FREMSTILLET VED FREMGANGSMAADEN
CATHODE ASSEMBLY OF ELECTRON RADIATOR
MIXER
HERBICIDAL COMPOSITION
DEVICE FOR RECORDING PEDAL PARAMETERS OF BICYCLISTS
CARRIAGE FOR WINDING THE BASE OF FELTED FOOTWEAR
LIGHTING PROTECTION DEVICE
BUFFER IMMEDIATE-ACCESS MEMORY DEVICE
TRAINING DEVICE
DEVICE FOR INTERFACING TWO COMPUTERS
DEVICE FOR CHECKING DIODE MATRICES DEVICE FOR POLYNOMIAL DECOMPOSITION OF LOGIC FUNCTIONS
DEVICE FOR CHECKING DIODE MATRICES
METHOD OF DETERMINING ANTIWEAR PROPERTIES OF LUBRICATING OILS
METHOD OF QUANTITATIVE DETERMINATION OF OXYETHYLATED SURFACE-ACTIVE SUBSTANCES
METHOD OF DETERMINING DIMETHYLSULFIDE AND METHANTHIOL
METHOD OF DETERMINING FORMALDEHYDE IN AIR
DEVICE FOR TENSILE TEST OF MATERIALS
DEVICE FOR REGISTERING WATER LEVEL DIFFERENCE
