Beijing Hailan Science & Technology Development Co., Ltd.

Follow

Organization

Beijing, CN

Organizations

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Rope winder, petroleum instrument salvaging system and petroleum in...
- Patent number 10,087,054
- Issue date Oct 2, 2018
- BEIJING HAILAN SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD.
- Biao Yang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Petroleum instrument hoisting system and hoisting head
- Patent number 9,938,790
- Issue date Apr 10, 2018
- BEIJING HAILAN SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD.
- Biao Yang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Petroleum instrument salvaging connector and petroleum instrument
- Patent number 9,915,115
- Issue date Mar 13, 2018
- BEIJING HAILAN SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD.
- Biao Yang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Electrical connector and drilling system
- Patent number 9,620,881
- Issue date Apr 11, 2017
- BEIJING HAILAN SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD.
- Biao Yang
- E21 - EARTH DRILLING MINING

Please log in for detailed analytics

Patents Applicationslast 30 patents

Information Patent Application
PETROLEUM INSTRUMENT HOISTING SYSTEM AND HOISTING HEAD
- Publication number 20160115756
- Publication date Apr 28, 2016
- Beijing Hailan Science & Technology Development Co., Ltd.
- Biao YANG
- E21 - EARTH DRILLING MINING
Information Patent Application
PETROLEUM INSTRUMENT SALVAGING SYSTEM AND SALVAGING HEAD
- Publication number 20160115757
- Publication date Apr 28, 2016
- Beijing Hailan Science & Technology Development Co., Ltd.
- Biao YANG
- E21 - EARTH DRILLING MINING
Information Patent Application
ROPE WINDER, PETROLEUM INSTRUMENT SALVAGING SYSTEM AND PETROLEUM IN...
- Publication number 20160115754
- Publication date Apr 28, 2016
- Beijing Hailan Science & Technology Development Co., Ltd.
- Biao Yang
- E21 - EARTH DRILLING MINING
Information Patent Application
PETROLEUM INSTRUMENT SALVAGING CONNECTOR AND PETROLEUM INSTRUMENT
- Publication number 20160115758
- Publication date Apr 28, 2016
- Beijing Hailan Science & Technology Development Co., Ltd.
- Biao Yang
- E21 - EARTH DRILLING MINING