Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808486 | Production method of machine parts and the machine parts thus produced | Harutoshi Yamamoto, Zenichi Mochizuki | 1989-02-28 |
| 4693293 | Method of casting a machine part by fusing metal layers on both sides of a separting plate | Harutoshi Yamamoto | 1987-09-15 |