Membership
Tour
Register
Log in
Hingli Cong
Follow
Person
Shandong, CN
People
Overview
Industries
Organizations
People
Information
Impact
Patents Applications
last 30 patents
Information
Patent Application
Surface Motor Direct-Drive Sucker-Rod Screw Pump Device
Publication number
20100098563
Publication date
Apr 22, 2010
Jun Liu
E21 - EARTH DRILLING MINING