Major Chang

📍 Zhubei City, TW: #657 of 1,506 inventorsTop 45%

Overall (All Time): #2,245,994 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5888175	Structure of step exercising machine	—	1999-03-30
5865712	Walking exerciser	—	1999-02-02