Wa; Choi Man
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wa; Choi Man.The latest application filed is for "water-based drawing surface and device utilizing same".
- Wa; Choi Man - Fanling N/A HK
- Wa; Choi Man - Dawning Views HK
- Wa; Choi Man - Hong Kong CN
| Patent | Date |
|---|---|
| Anti-counterfeiting mechanism for a toy housing Grant 8,911,845 - Wa , et al. December 16, 2 | 2014-12-16 |
| Water-based drawing surface and device utilizing same Grant 8,017,222 - Wa September 13, 2 | 2011-09-13 |
| Drive and secure mechanism for toy vehicle and track Grant 7,770,524 - Wa August 10, 2 | 2010-08-10 |
| Water-based drawing surface and device utilizing same App 20080199640 - Wa; Choi Man | 2008-08-21 |
| Portable easel for assisting in tracing and drawing of figures Grant 7,073,913 - Wa July 11, 2 | 2006-07-11 |
| Flexible track for a toy vehicle Grant 7,051,948 - Wa May 30, 2 | 2006-05-30 |
| Toy train accessory Grant 6,935,920 - Wa August 30, 2 | 2005-08-30 |
| Flexible track for a toy vehicle App 20040182947 - Wa, Choi Man | 2004-09-23 |
| Flexible track for a toy vehicle Grant 6,631,850 - Wa October 14, 2 | 2003-10-14 |
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