Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9145941 | Hollow coil spring and method for manufacturing same | Takashi Yajima | 2015-09-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9145941 | Hollow coil spring and method for manufacturing same | Takashi Yajima | 2015-09-29 |