VT

Vincent W. M. Tung

HC Hong Kong Stationery Manufacturing Co.: 2 patents #2 of 4Top 50%
Overall (All Time): #2,236,498 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6045286 Metal ring binder with auxiliary springs — 2000-04-04
5904435 Locking booster ring binder mechanism — 1999-05-18