Koon-Ming Cheng

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Taipei, TW

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Patents Grantslast 30 patents

Information Patent Grant
Suitcase with two u-shaped rubber strips
- Patent number 6,345,709
- Issue date Feb 12, 2002
- Ruey Yuan Co., Ltd.
- Koon-Ming Cheng
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Buckle joint
- Patent number 6,330,736
- Issue date Dec 18, 2001
- Ruey Yuan Co., Ltd.
- Koon-Ming Cheng
- A44 - HABERDASHERY JEWELLERY