Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304226 | Abrasive grain and manufacture for the same | Mitsuru Hasegawa, Tetsuo Hatanaka | 1994-04-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304226 | Abrasive grain and manufacture for the same | Mitsuru Hasegawa, Tetsuo Hatanaka | 1994-04-19 |