CK

Chung Nin Ko

HC Hong Kong Stationery Manufacturing Co.: 11 patents #1 of 4Top 25%
Overall (All Time): #471,920 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
6637968 Three-ring binder with actuating crank 2003-10-28
D479267 Ring binder 2003-09-02
D448045 Ring binder having a torsionally stiffened blade 2001-09-18
6206601 Locking booster ring binder mechanism 2001-03-27
D424106 Metal ring binder 2000-05-02
D423045 Metal ring binder 2000-04-18
D420700 Metal ring binder with an embossed surface 2000-02-15
5964544 Ring binder assembly 1999-10-12
D409240 Ribbed metal ring binder 1999-05-04
5882135 Ring binder assembly 1999-03-16
D405113 Metal ring binder with ribs 1999-02-02