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
Flow valve assembly
摘要
申请公布号
US2673568(A)
申请公布日期
1954.03.30
申请号
US19490070280
申请日期
1949.01.11
申请人
BUFFINGTON BERNARD K
发明人
BUFFINGTON BERNARD K.
分类号
E21B43/12
主分类号
E21B43/12
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Process for the manufacture of polycarboxylic acids using phosphorous containing reducing agents
Pentafluoropropane-based compositions
Packaging system to provide fresh packed coffee
Vehicle lamp
Belt-type fixing device
Electromagnetic interference shield apparatus
High throughput separations based analysis systems
Arrangement and method for ESD protection
System and method for determining a natural color depth of a digital image
Connection between a semiconductor chip and an external conductor structure and method for producing it
Information processing system for updating data in a shared network storage system
Method and system for providing auxiliary content located on local storage during download/access of primary content over a network
Method of determining parameters of an OFDM signal and associated receiver
Size enhanced hemoglobins: surface decoration and crosslinking of the protein with polyoxy alkylene glycols
Method and apparatus for marking workpieces
Trim retarders incorporating negative birefringence
Cross-bar switch incorporating a sink port with retry capability
Stamper for producing optical recording medium, optical recording medium, and methods of producing the same
Method of estimating electrical parameters of an earth formation with a simplified measurement device model
Data processing apparatus and method, and storage medium therefor
