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
Control head
摘要
申请公布号
US1966809(A)
申请公布日期
1934.07.17
申请号
US19300480324
申请日期
1930.09.08
申请人
WICKERSHAM HARRY P;TOW JAMES O
发明人
WICKERSHAM HARRY P.;TOW JAMES O.
分类号
E21B33/06
主分类号
E21B33/06
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD, RIVET-PUNCH, RIVET, ETC. FOR JOINING SEVERAL METAL SHEETS BY USING NON-HEAT-TREATING RIVETS MADE FROM AN ALUMINIUM ALLOY
Diagonal veneer laminate
INDOLINYL N-HYDROXYUREA AND N-HYDROXAMIC ACID DERIVATIVES AS LIPOXYGENASE INHIBITORS
MEANS FOR PRODUCING AN AEROSOL
METHOD FOR PRESENTING GRAPHIC REPRESENTATIONS AND A GEOGRAPHIC MAP BASED THEREON
AUTOMATED TELLER MACHINE FOR DISPENSING COIN ROLLS
Apparatus for adjusting the axial backlash between the rotor and the stator of a motor
VALVE
POWER UNIT HAVING SELF-OSCILLATING SERIES RESONANCE CONVERTER
Display case for secure containment of objects, in particular art objects in museums and exhibitions
A CONTINUOUS-ACTION REFERENCE ELECTRODE FOR THE CATHODIC PROTECTION OF METALLIC STRUCTURES
Printing tape and printing-tape cartridge
Gas discharge device having a field emitter array consisted of microscopic emitting elements
Ink ribbon support for thermal transfer printer
NOVEL ACYLATED PHOSPHOLIPID DRUGS
Apparatus for making building blocks
Cartridge for feeding oversized paper stock from a standard size tray
CORE CUTTER HEAD
Method and apparatus for determining body ply cord distribution
Adjustable stabilizer for drill string
