Inventor

MAO YONGYONG

CN2 patents

Patents

2 patents

US7819476B2Oct 26, 2010

Lift chair and a chair base frame with a force balance mechanism for use therewith

TRUST BETTER LIFE CORP I3 citations58

US7482544B2Jan 27, 2009

Lift chair and a chair base frame with an actuator for use therewith

TRUST BETTER LIFE CORP I4 citations58