Chung Nin Ko

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
Ring binder having a torsionally stiffened blade
- Patent number D448045
- Issue date Sep 18, 2001
- Hong Kong Stationery Manufacturing Co., Ltd.
- Chung Nin Ko
- D19 - Office supplies
Information Patent Grant
Metal ring binder
- Patent number D423045
- Issue date Apr 18, 2000
- Hong Kong Stationery Manufacturing Co., Ltd.
- Chung Nin Ko
- D19 - Office supplies
Information Patent Grant
Metal ring binder with an embossed surface
- Patent number D420700
- Issue date Feb 15, 2000
- Hong Kong Stationery Manufacturing Co., Ltd.
- Chung Nin Ko
- D19 - Office supplies