David Chung

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Gyeonggi-Do, KR

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Patents Grantslast 30 patents

Information Patent Grant
Coffee bean roaster and method for roasting coffee beans using the...
- Patent number 7,740,892
- Issue date Jun 22, 2010
- HRS Co. Ltd.
- David Chung
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Coffee bean roaster and method for roasting coffee beans using the...
- Patent number 7,406,913
- Issue date Aug 5, 2008
- HRS Co. Ltd.
- David Chung
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES