Chang; Ling-Seng
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Ling-Seng.The latest application filed is for "braking system, rollator and transport chair with the same".
- Chang; Ling-Seng - Taipei TW
- CHANG; Ling-Seng - TAIPEI CITY TW
| Patent | Date |
|---|---|
| Braking system, rollator and transport chair with the same Grant 8,998,223 - Chang April 7, 2 | 2015-04-07 |
| Braking System, Rollator And Transport Chair With The Same App 20140265188 - CHANG; Ling-Seng | 2014-09-18 |
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