Clamp for derricks,申请号US19270188026-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	Clamp for derricks
摘要
申请公布号	US1795032(A)	申请公布日期	1931.03.03
申请号	US19270188026	申请日期	1927.04.30
申请人	LEE C. MOORE & COMPANY, INCORPORATED	发明人	MCEWEN JOHN D.
分类号	E21B15/00	主分类号	E21B15/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

SENSOR MODULE PROVIDED WITH CAPACITOR EMC AND ESD PROTECTION

RECORDING MEDIUM AND METHOD AND APPARATUS FOR REPRODUCING TEXT SUBTITLE STREAM RECORDED ON THE RECORDING MEDIUM

INFORMATION PROCESSING DEVICE AND METHOD, PROGRAM RECORDING MEDIUM, AND PROGRAM

Halbleiterbaugruppe mit Halbleiterchip, gebildet unter Verwendung eines Halbleiters mit breitem Bandabstand als Basismaterial

Electrical power generating device, has injector to inject electrical charge into wind flowing through pipe, and collector to collect charges from wind, such that part of kinetic energy of wind is converted into direct current

Internal gear switching arrangement, has switching selector shafts and forks provided with transverse force supports in portion where switching fingers engage, where supports are coupled by dovetail guides that permit shifting of supports

New 4-heterocyclyl-1-acyl-piperidine derivatives, useful e.g. for treating headache, diabetes and cardiovascular disease, are antagonists of calcitonin-gene related peptide

Low-pressure hydraulic accumulator for damping pressure fluctuations in a tank line of a hydraulic work unit comprises a housing accommodating at least one solid compressible body with a pore system

Outlet cover for a wall comprises a rigid protrusion arranged in the center of the lid

Combined bridging and splitting circuit for a gearbox has a drive element, rotational speed or torque conversion units, two power branches and switchable clutches

Holiday and travel self service machine offers customers the means to freely access travel data

Window roller blind for motor vehicle door has second guide rail arranged parallel to first guide rail and running at least partly in waist region or in edge of the door

Welding process involves forward traversing of the prepared workpiece and electrodes to a small gap, introduction of shielding gas into the gap, and application of a high frequency voltage

Device for producing a flame-like or waterfall effect in a room for producing a movement effect comprises moving units activated by a mass stream and a device for producing a mass stream

MIDI-Controller for use on computer to compose music, has control unit mounted on each freely groupable modules and optically connected with bus system, where each module is connected with bus system through respective control unit

Strut for use in vehicle suspensions comprises shock absorber housing on which spring is mounted, rubber auxiliary spring between strut mounting and top of housing containing metal ring to filter out excitation frequencies

Construction system for erection outdoors has skeleton made of individual frames holding filling pieces

Web page loading method in which web pages are divided into layout and content components, with the layout part only loaded when a user first visits a website, after which it is stored as a file on the client computer