Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878056 | Key input circuit | Yuji Okamoto | 1989-10-31 |
| 4750680 | Vertically controlled track sander | Junichi Shigeura, Nobuyoshi Takahashi | 1988-06-14 |
| 4747627 | Apparatus for improving adhesion of a railway vehicle | Junichi Shigeura, Nobuyoshi Takahashi | 1988-05-31 |