Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4661709 | Modular all-electrostatic electron-optical column and assembly of said columns into an array and method of manufacture | David M. Walker, Alan P. Sliski, Kenneth J. Harte | 1987-04-28 |
| 4419580 | Electron beam array alignment means | David M. Walker | 1983-12-06 |