Mak; Lai Cheong
Patent Applications and Registrations
Patent applications and USPTO patent grants for Mak; Lai Cheong.The latest application filed is for "interactive shoe light device".
- Mak; Lai Cheong - Kowloon HK
- Mak; Lai Cheong - Hong Kong CN
| Patent | Date |
|---|---|
| Interactive Shoe Light Device App 20070041193 - Wong; Wai Kai ; et al. | 2007-02-22 |
| Inertia switch and flashing light system Grant 7,170,019 - Wong , et al. January 30, 2 | 2007-01-30 |
| Frequency controlled lighting system Grant 7,067,986 - Wong , et al. June 27, 2 | 2006-06-27 |
| Frequency controlled lighting system Grant 7,057,354 - Wong , et al. June 6, 2 | 2006-06-06 |
| Flashing light system with multiple voltages Grant 7,029,140 - Wong , et al. April 18, 2 | 2006-04-18 |
| Flashing light system with multiple voltages App 20050134191 - Wong, Wai Kai ; et al. | 2005-06-23 |
| Frequency controlled lighting system App 20050057188 - Wong, Wai Kai ; et al. | 2005-03-17 |
| Frequency controlled lighting system App 20050057919 - Wong, Wai Kai ; et al. | 2005-03-17 |
| Letter flashing system for footwear and personal articles App 20050024852 - Wong, Wai Kai ; et al. | 2005-02-03 |
| Inertia switch and flashing light system App 20050011737 - Wong, Wai Kai ; et al. | 2005-01-20 |
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