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Patents Grantslast 30 patents

Information Patent Grant
Vocal reporting device for pointer type timers with photoelectric c...
- Patent number 5,293,356
- Issue date Mar 8, 1994
- Feng; Tai-Chia
- Feng Chin-Hsing
- G04 - HOROLOGY
Information Patent Grant
Vocal reporting device for pointer type timers with accumulative ti...
- Patent number 5,239,523
- Issue date Aug 24, 1993
- Feng; Tai-Chia
- Feng Chin-Hsing
- G04 - HOROLOGY

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