Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818885 | Electron beam writing method and system using large range deflection in combination with a continuously moving table | Samuel K. Doran, Merlyn H. Perkins, Hans C. Pfeiffer | 1989-04-04 |
| 4795332 | Telescopic pivoting screed | — | 1989-01-03 |