Chang; Dragon
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chang; Dragon.The latest application filed is for "folding shaft for umbrellas".
- Chang; Dragon - Hsinchu TW
- Chang; Dragon - Hsinchu City TW
- Chang, Dragon - Shindian City TW
| Patent | Date |
|---|---|
| Folding shaft for umbrellas Grant 7,588,042 - Chang September 15, 2 | 2009-09-15 |
| Mechanism for opening and collapsing umbrella Grant 7,575,009 - Chang August 18, 2 | 2009-08-18 |
| Folding shaft for umbrellas App 20080149153 - Chang; Dragon | 2008-06-26 |
| Mechanism for opening and collapsing umbrella App 20080087311 - Chang; Dragon | 2008-04-17 |
| Safety device for switch of umbrella App 20070277862 - Chang; Dragon | 2007-12-06 |
| Light-emitting device with light softening cover App 20040105279 - Liu, Daniel ; et al. | 2004-06-03 |
| Electronic load simulation circuit with serially connected impedance element App 20040036496 - Liu, Daniel ; et al. | 2004-02-26 |
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