Huang; Hai-Sheng
Patent Applications and Registrations
Patent applications and USPTO patent grants for Huang; Hai-Sheng.The latest application filed is for "automatic toilet cleaning device".
- Huang; Hai-Sheng - Longtan Township Taoyuan County TW
- Huang; Hai-Sheng - Lung Tan Hsian TW
| Patent | Date |
|---|---|
| Automatic toilet cleaning device Grant 8,136,171 - Huang March 20, 2 | 2012-03-20 |
| Automatic Toilet Cleaning Device App 20100257662 - HUANG; Hai-Sheng | 2010-10-14 |
| Safety device of two-way braking for a retractable door leaf App 20070095488 - Huang; Hai-Sheng | 2007-05-03 |
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