Patent US 4542390A
| Patent number | US 4542390A (click link for details and documents via Google Patents) |
|---|---|
| Title | Ink jet printer purging device and process |
| Inventors | John W. Bruning, Stephen C. Fuller |
| Company | Tektronix Inc |
| Filing date | 1983-07-29 |
| Grant date | 1985-09-17 |