Sin; Timmy Hok Yin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sin; Timmy Hok Yin.The latest application filed is for "manual floor sweeper".
- Sin; Timmy Hok Yin - Kowloon HK
- Sin; Timmy Hok Yin - Hong Kong HK
- Sin; Timmy Hok Yin - New Territories HK
| Patent | Date |
|---|---|
| Manual floor sweeper Grant 6,912,753 - Sin , et al. July 5, 2 | 2005-07-05 |
| Manual floor sweeper App 20040205915 - Sin, Timmy Hok Yin ; et al. | 2004-10-21 |
| Vacuum broom Grant D406,420 - Sin March 2, 1 | 1999-03-02 |
| Sweeping brooms Grant 5,839,158 - Schupp , et al. November 24, 1 | 1998-11-24 |
| Vacuum cleaners Grant 5,638,575 - Sin June 17, 1 | 1997-06-17 |
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