Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8988781 | Focus-adjustable device and system thereof | Cheng-Huan Chen | 2015-03-24 |
| 4994163 | Rotatable wastewater metal-reclaimation device | — | 1991-02-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8988781 | Focus-adjustable device and system thereof | Cheng-Huan Chen | 2015-03-24 |
| 4994163 | Rotatable wastewater metal-reclaimation device | — | 1991-02-19 |