Patent US 5134337A
| Patent number | US 5134337A (click link for details and documents via Google Patents) |
|---|---|
| Title | Projection lens assembly for planar electron source |
| Inventors | Keith F. Kongslie, Gary Nelson, Duncan F. Hughes |
| Company | Tektronix Inc |
| Filing date | 1991-07-05 |
| Grant date | 1992-07-28 |