Beijing Hailan Science & Technology Development Co., Ltd.

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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

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

Trademarklast 30 trademarks