Chang; Hsien Tsung
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Hsien Tsung.The latest application filed is for "magnetically attachable light assembly for glasses".
- Chang; Hsien Tsung - Banciao TW
- Chang; Hsien-Tsung - Chiayi TW
- Chang, Hsien-Tsung - Banchiao City TW
- Chang; Hsien Tsung - Taipei TW
| Patent | Date |
|---|---|
| Eyeglass device Grant 7,226,161 - Chao , et al. June 5, 2 | 2007-06-05 |
| Magnetically attachable light assembly for glasses Grant 6,974,226 - Chang December 13, 2 | 2005-12-13 |
| Magnetically attachable light assembly for glasses App 20040150986 - Chang, Hsien-Tsung | 2004-08-05 |
| Linking device for connecting secondary lens to spectacles App 20030123023 - Chang, Hsien-Tsung | 2003-07-03 |
| Computer-aided learning method and systems matching students with instructors Grant 6,325,632 - Chao , et al. December 4, 2 | 2001-12-04 |
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