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
Swivel socket
摘要
申请公布号
US2318839(A)
申请公布日期
1943.05.11
申请号
US19410419175
申请日期
1941.11.14
申请人
CRICKMER CHARLES S
发明人
CRICKMER CHARLES S.
分类号
E21B19/02
主分类号
E21B19/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Methods of controlling the brightness of a glow discharge
ABSORBENT ARTICLES, SUCH AS A DIAPER, A PANTS-TYPE DIAPER, AN INCONTINENCE GUARD, A SANITARY NAPKIN OR LIKE ARTICLE
Improvements in or relating to handcuffs
Thermostatic radiator valves
SUPERHIGH FREQUENCY FURNACE
LINEAR ELECTRIC DRIVE
PROCESS OF MANUFACTURE OF MOUNTING SURFACES OF CONTACT PLATES FOR ACTIVE ELEMENTS OF SEMICONDUCTOR DEVICES
DEVICE FOR REMOVING BURRS FROM ENDS OF SPLIT STRIP-WOUND MAGNETIC CIRCUITS
DEVICE FOR ADDITION AND SUBTRACTION OF SIXTEEN INTEGERS BY MODULO THREE
MEMORY LOCATION
STOCHASTIC FILTER
METHOD OF MEASURING TIME AND INDICATING DEVICE FOR TIMEPIECE (VARIANTS)
DEVICE FOR MEASURING ANGLE OF PHASE SHIFT BETWEEN HARMONIC VIBRATIONS OF MULTIPLE FREQUENCIES
CURRENT METER
METHOD FOR VIBRATION DIAGNOSTICS OF RADIAL INTERNAL COMBUSTION ENGINES
METHOD OF ASSEMBLY OF TAPER STOPLESS THREADED JOINTS OF PIPES OF PETROLEUM RANGE
METHOD OF LAYING PIPE LINE
COW BARN
JET ENGINE
DEVICE FOR APPLICATION OF VOLATILE CORROSION INHIBITOR TO VESSEL INNER SURFACE
