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
DETACHABLE PROTECTOR FOR DRILL PIPES
摘要
申请公布号
SU734387(A1)
申请公布日期
1980.05.15
申请号
SU19782569331
申请日期
1978.01.11
申请人
SEVERO-KAVKAZSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
BOGDANOV ANATOLIJ S,SU;KOLOYARTSEV OLEG P,SU
分类号
E21B17/10;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Clamping arrangement and method
Method and apparatus for high speed digital circuit testing
Scanning apparatus and method using sharp and unsharp spots
Glow discharge starter switch
Differential amplifier pulse delay circuit
Photoelectric smoke detector
Prismatic display window for a calculator
Dry process photographic paper recording apparatus
Vacuum arc device with improved arc-resistant electrodes
Frame syncrhonization of elastic data bit stores
Unitary plastic laminate
Biodegradable polymeric article for dispensing drugs
Air valve carburetor
Coupling process for substituted aminoazobenzenesulfonic acids
Transmitting power meter for measurement of radiation
Permanent magnet strong field separator
Honeycomb product and process for manufacture
Merchandising device for maintaining food product units in a uniformly heated condition
Metallic coating method
Antibacterial oral compositions containing preservative-antioxidants
