Chan; Stephen Wai-Kin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chan; Stephen Wai-Kin.The latest application filed is for "air purifier".
- Chan; Stephen Wai-Kin - Hong Kong HK
| Patent | Date |
|---|---|
| Air purifier Grant 6,660,070 - Chung , et al. December 9, 2 | 2003-12-09 |
| Air purifier App 20020078830 - Chung, Chi-Cheung ; et al. | 2002-06-27 |
| Electric toaster Grant 6,382,084 - Chan , et al. May 7, 2 | 2002-05-07 |
| Electric toaster App 20020002910 - Chan, Stephen Wai-Kin ; et al. | 2002-01-10 |
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