Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852304 | Apparatus and method for slicing a wafer | Susumu Sawafuji | 1989-08-01 |
| 4838238 | Internal peripheral edge type blade holding device | Susumu Sawafuji, Tomio Tomita | 1989-06-13 |