Ching-Tai Yen

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Taipei Hsien, TW

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Patents Grantslast 30 patents

Information Patent Grant
Electronic dart board
- Patent number 6,047,968
- Issue date Apr 11, 2000
- Kuo-Hui Lu
- F41 - WEAPONS
Information Patent Grant
Dart
- Patent number 5,967,915
- Issue date Oct 19, 1999
- Kuo-Hui Lu
- F42 - AMMUNITION BLASTING
Information Patent Grant
Central score block structure for electronic dart games
- Patent number 5,718,433
- Issue date Feb 17, 1998
- Kuo-Hui Lu
- F41 - WEAPONS