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
Lightweight drill pipe
摘要
申请公布号
GB1000955(A)
申请公布日期
1965.08.11
申请号
GB19620015328
申请日期
1962.04.19
申请人
AMERICAN IRON & MACHINE WORKS COMPANY, INC.
发明人
分类号
E21B17/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ATTRACTANT COMPOSITE D'INSECTES, NOTAMMENT DES MAMESTRES MALES DU CHOU ET PROCEDE DE PREPARATION DES CONSTITUANTS ACTIFS DE CET ATTRACTANT
Motor vehicle window or roof sliding mechanism - has coupling halves linked to worm-wheel and movable on shaft
Lubricating oils contg. solid lubricant - and copolymer of n-vinyl!-pyrrolidone and acrylate! ester!
Explosion proof light fitting for signalling purposes - has tubes for lamps and transparent cap connected by sealing compound
Centrifugal supercharger for internal combustion engine - has air cooled after-cooler for economy of construction and operation
Timed connection network for telephone circuit - has two=way conversation selection elements which include timed switches and memory circuits
Variable reflectivity mirror for vehicles - has two polarising screen filters, one rotated w.r.t other
Sampling non-homogeneous crude oil in static tank - by lowering flexible sampling tube into tank, closing tube end valve, removing tube, and squeezing out sample
Remote control system esp. for submerged equipment - incorporates operating module, connected to surface control station, equipped with local electrical energy generator
Steel for partially prestressed concrete members - has ultimate strength between that of conventional reinforcing and prestressing steels
HYDROSTATIC LEVEL
METHOD OF MEASURING TORSIONAL OSCILLATIONS OF A SHAFT
DEVICE FOR MEASURING TOOTHED WHEEL TEETH THICKNESS, MAINLY OF SMALL-MODULUS
DEVICE FOR MEASURING DIMENSIONS OF FERROMAGNETIC ARTICLES WITH DISCONTINUOUS SURFACES
CAST IRON MODIFIER
DEVICE FOR MEASURING GAS LOW RATE-OF-FLOW
PNEUMATIC DEVICE FOR MEASURING LINEAR DIMENSION
DUMP-FORMING ARRANGEMENT
FORMATION TESTER SAMPLER
DEVICE FOR MANUFACTURING GALVANIC THERMOCOUPLES
