Patent US 4106011A
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| Patent number | US 4106011A (click link for details and documents via Google Patents) |
|---|---|
| Title | Keyboard circuit |
| Inventors | John Laurence Melanson, Richard Allen Springer, Jack Duane Grimes, Jack Gilmore |
| Company | Tektronix Inc |
| Filing date | 1975-10-24 |
| Grant date | 1978-08-08 |