Valve head for by-pass packers,申请号US19440560893-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	Valve head for by-pass packers
摘要
申请公布号	US2491122(A)	申请公布日期	1949.12.13
申请号	US19440560893	申请日期	1944.10.28
申请人	M. O. JOHNSTON OIL FIELD SERVICE CORPORATION	发明人	LYNN HARRY E.
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

Mutants of interleukin-1 receptor antagonist

System and method for providing an augmented reality experience

Airfoil with cooling passage providing variable heat transfer rate

Sidewall panel and tarpaulin cover system for flat bed trailers, and truck trailer incorporating same

Irritation-reducing ocular iontophoresis device

Laminated insecticide dispenser

Signal transmitter linearization

Cardiotomy and venous blood reservoir and method

Fructosyl peptide oxidase

Botnet early detection using hybrid hidden markov model algorithm

Method, apparatus and computer program for supporting determination on degree of confidentiality of document

Method and system for discrete stateful behavioral analysis

Password authentication apparatus and password authentication method

Method and system for distributed, localized authentication in the framework of 802.11

Optical disc with thicker supporting section and thinner recording section

Optical disc apparatus including a disc tray

Multi level virtual function tables

System for maintaining and analyzing manufacturing equipment and method thereof

Automated system for compiling a plurality of existing mortgage loans for intra-loan restructuring of risk via capital infusion and dynamic resetting of loan terms and conditions

Determining commercial share of wallet