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
Well head apparatus
摘要
申请公布号
US3171674(A)
申请公布日期
1965.03.02
申请号
US19620192172
申请日期
1962.05.03
申请人
ARMCO STEEL CORPORATION
发明人
BICKEL PAUL E.;JR. WILLIAM W. WORD,
分类号
E21B33/043
主分类号
E21B33/043
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Bioelektrische Anordnung
Vehicle automatic lighting circuit with photoresistor - includes Schmitt trigger threshold and delay stages to prevent reaction to changes in illumination of very short duration
Ether-carboxylic acid salt surfactant prepn - by Williamson synthesis with organic halide treatment of prod to remove starting material and improve foaming and cleaning power
Membrane sepn. process for solns. with temp. and/or pressure controlled recovery of solute - by cooling retentate stream to supersaturation or reduced pressure flashing
Barium titanate-based compsn. - used for thermistors with negative temp. coefficient
Optical component mfr. by reactive etching - of metal oxide dielectric, esp. tantalum or hafnium oxide
Controlling CMOS, tri-state buffer circuit - applying voltage, lower than operational supply voltage, to gate of FET coupled to driver circuit ground
Semiconductor DRAM with several inputs and outputs - has WE buffer converting write enable signal at TTL level into one with CMOS level, and buffer protection circuit
Method to operate combination power station - uses part flue gas flow, which is branched-off in substoichiometric combustion area, in front of secondary air supply
Holder for drink container for use in vehicle - has circular gripping section with inwardly projecting deflectable flaps having radial extension of 20-30 per cent of inner holder radius
Field emission device for field emission triode - has convex hollow space in substrate of monocrystalline silicon@ with opening whose side edges form field emitter edges
Electron, charge particle or laser beam system e.g. for testing integrated circuit on large substrate - has deflection system for primary beam through aperture slot of extraction electrode, and detector for sensing fraction of secondary electrons generated from surface of test object
Fibre=optic sensor for detecting electric current in conductor - uses linearly polarised light source, polarising fibre, coupler, quarter wave retarder, sensor fibre and evaluates interference
Capacitor over-pressure and drop=out indicator for capacitor bank - separates capacitor from external circuit using pressure-sensitive membrane for moving conductor, and has leaf spring, light valve, inductive or capacitive proximity switch for triggering display
Deep drawn plastic vessel for pourable material - has dispensing aperture arranged in cavity groove alongside blade-type tool for its sepn
Cutting machine for ceramic, earthenware, concrete etc. workpieces - has top and bottom parts for work clamping, with work facing cushions and cutting blades
Cassette loading stage for different size magnetic tape cassettes - has protections locating in cassette grooves to ensure correct alignment within recorder player.
Use of DOPA-decarboxylase inhibitors or dopamine receptor antagonists - to treat redn. of kidney function in humans
Stretchable aramid copolymers with high tensile strength - is derived from terephthalic acid and 1,4-phenylenediamine, 2,2-di:substd. 4,4-di:amino-bi:phenyl(s) and opt. 3,4-oxy-di:aniline
Konstruktions-Bauelement für die Verglasung von Bauten