Inventor

KOU YANFEI

CN2 patents

Patents

2 patents

US10598182B2Mar 24, 2020

Ventilation apparatus with counter-rotating impellers driven by long shaft

UNIV TAIYUAN TECHNOLOGY2 citations68

US10330213B2Jun 25, 2019

Electromechanical-linkage hydraulic control gate valve actuator

UNIV TAIYUAN TECHNOLOGY0 citations33