Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336885 | Electron beam apparatus | Ralf Degenhardt, Karel Diederick Van Der Mast | 1994-08-09 |
| 5319207 | Imaging system for charged particles | Ralf Degenhardt, Dirk Preikszas | 1994-06-07 |