Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881670 | Automatic melt supplying method and holding furnace having automatic melt supplying system | Tomohiro Toyota | 1989-11-21 |
| 4850577 | Melting and holding furnace | — | 1989-07-25 |