Patent US 4853498A
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| Patent number | US 4853498A |
|---|---|
| Title | Position measurement apparatus for capacitive touch panel system |
| Inventors | Robert D. Meadows, Roger J. McCoy |
| Company | Tektronix Inc |
| Filing date | 1988-06-13 |
| Grant date | 1989-08-01 |
| Cites |