Patent US 4853498A
| Patent number | US 4853498A (click link for details and documents via Google Patents) |
|---|---|
| Title | Position measurement apparatus for capacitive touch panel system |
| Inventors | Robert D. Meadows, Roger McCoy |
| Company | Tektronix Inc |
| Filing date | 1988-06-13 |
| Grant date | 1989-08-01 |