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 reamer
摘要
申请公布号
US2218743(A)
申请公布日期
1940.10.22
申请号
US19370138599
申请日期
1937.04.23
申请人
GLOBE OIL TOOLS COMPANY
发明人
CATLAND ALFRED C.
分类号
E21B10/30
主分类号
E21B10/30
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Method and apparatus for managing a heterogeneous data storage system
Fuel cell powered electric aircraft
Bandwidth effective method for communicating interactive links
System and method for providing redundancy in a telecommunications system
System and method for increased sheet timing operation window for registration
Method of preparation of ethylene copolymers suitable for manufacturing films and pipes
Eyepiece-support arm assembly device on an aircraft such as a rotary aircraft
Method for the transmission and control of audio, video, and computer data over a single network fabric using ethernet packets
Improved configuration of three-dimensional features in optical recording structures
Icon display processor for displaying icons representing sub-data embedded in or linked to main icon data
Method and system for report presentation and navigation in a computer system
Games grid board-life games
Method and system of reformatting data blocks for storage as larger size data blocks
Method and circuit for pre-emphasis equalization in high speed data communications
Optoelectronic component for data transmission
Radiation resistant integrated circuit design
Solubilized defoamers for cementitious compositions
Amino acid derivatives of triptolide compounds as immune modulators and anticancer agents
Silver halide photographic emulsion
Cyclic AMP-specific phosphodiesterase inhibitors