Patent US 4680429A
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| Patent number | US 4680429A (click link for details and documents via Google Patents) |
|---|---|
| Title | Touch panel |
| Inventors | Bruce Murdock, Daniel G. Teichmer |
| Assignee | Tektronix Inc |
| Filing date | 1986-01-15 |
| Grant date | 1987-07-14 |