Patent US 4970535A
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| Patent number | US 4970535A (click link for details and documents via Google Patents) |
|---|---|
| Title | Ink jet print head face cleaner |
| Inventors | James C. Oswald, Jeffrey J. Anderson, Ted E. Deur |
| Company | Tektronix Inc |
| Filing date | 1989-11-27 |
| Grant date | 1990-11-13 |