Chan; Frederick Ying-shu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chan; Frederick Ying-shu.The latest application filed is for "retractable cable winder".
- Chan; Frederick Ying-shu - Hong Kong HK
- Chan, Frederick Ying-shu - Kowloon HK
| Patent | Date |
|---|---|
| Retractable cable winder Grant 7,017,846 - Tsoi , et al. March 28, 2 | 2006-03-28 |
| Retractable cable winder App 20050184186 - Tsoi, Chung Haap ; et al. | 2005-08-25 |
| Protection for bi-directional optical wavelength division multiplexed communications networks App 20050180316 - Chan, Frederick Ying-shu | 2005-08-18 |
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