Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321870 | Torsion bar apparatus for self-closing door and torque adjusting device therefor | Kenichi Hiruma | 1994-06-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321870 | Torsion bar apparatus for self-closing door and torque adjusting device therefor | Kenichi Hiruma | 1994-06-21 |