Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854978 | Manufacturing method for high hardness member | Kaoru Tada, Mitsuo Kawai | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854978 | Manufacturing method for high hardness member | Kaoru Tada, Mitsuo Kawai | 1989-08-08 |