Yau; Cheung Wun
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yau; Cheung Wun.The latest application filed is for "motorized hand held cleaning tool with clamp on extension handle".
- Yau; Cheung Wun - Kowloon HK
- Yau, Cheung Wun - Hong Kong HK
| Patent | Date |
|---|---|
| Motorized hand held cleaning tool with clamp on extension handle Grant 7,203,986 - Pears , et al. April 17, 2 | 2007-04-17 |
| Motorized hand held cleaning tool with clamp on extension handle App 20040261204 - Pears, Barry ; et al. | 2004-12-30 |
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