Inventor

HSIAO HOWELL F

3 patents

Patents

3 patents

US5058888AOct 22, 1991

Automatic force generating and control system

WALKER FITNESS SYSTEMS INC79 citations93

US5209715AMay 11, 1993

Automatic force generating and control system

WALKER FITNESS SYSTEMS INC46 citations90

USD325610SApr 21, 1992

Physical exerciser

WALKER FITNESS SYSTEMS INC10 citations71