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 SERVICING
摘要
申请公布号
US3422895(A)
申请公布日期
1969.01.21
申请号
USD3422895
申请日期
1967.09.20
申请人
ESSO PRODUCTION RESEARCH CO.
发明人
KENNETH T. KOONCE
分类号
E21B23/08;(IPC1-7):E21B33/03;E21B41/00
主分类号
E21B23/08
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Vapor-solids contacting of dirty and clean mineral oils
Improvements in horizontal box formers
Papermakers wet felt, method and apparatus for dewatering wet web using such felt
Sprayer
Improvements in and relating to structures such as embankments or dikes
Improvements in or relating to the manufacture of glass
Voltage or current comparator
Bearing assembly
Improvements in methods of connecting longitudinal forcement and transverse bars
Food package
Improvements in or relating to the formation of cobalt oxide layers
Apparatus for cutting cloth
Ratchet device
Electric battery
Preparation of halogenated alkylaromatic isocyanates
Method of adhering dentures and compositions therefor
Foamed olefin copolymer blends
A method of treating metallic surfaces
Improvements relating to apparatus for converting digital data into artificial speech
Accessories for vacuum cleaners
