Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4541817 | Drive shaft assembly | Tadanobu Kumagai | 1985-09-17 |
| 4436310 | Sealing device for joint | Tadanobu Kumagai | 1984-03-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4541817 | Drive shaft assembly | Tadanobu Kumagai | 1985-09-17 |
| 4436310 | Sealing device for joint | Tadanobu Kumagai | 1984-03-13 |