Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804837 | Ion implantation surface charge control method and apparatus | — | 1989-02-14 |
| 4804852 | Treating work pieces with electro-magnetically scanned ion beams | Peter Rose, Lee Grodzins | 1989-02-14 |