Patent US 3683225A
| Patent number | US 3683225A (click link for details and documents via Google Patents) |
|---|---|
| Title | Orange-reflective graticule scale for cathode ray tube |
| Inventors | Marlow Butler |
| Company | Tektronix Inc |
| Filing date | 1970-03-20 |
| Grant date | 1972-08-08 |
Cites:
| Patent | Title | Inventors | Assignee | Granted |
|---|---|---|---|---|
| Patent US 3207936A | Electron beam display device | William H Wilbanks • Robert H Johnson • Chan H Wang • Frank C Erzen | Tektronix Inc | 1965-09-21 |