Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D805380 | Extension tool | Chia-Yi Chen | 2017-12-19 |
| 9776310 | Driving head-changeable tool and sleeve assembly thereof | Chia-Yi Chen | 2017-10-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D805380 | Extension tool | Chia-Yi Chen | 2017-12-19 |
| 9776310 | Driving head-changeable tool and sleeve assembly thereof | Chia-Yi Chen | 2017-10-03 |