Patent US RE31238E
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| Patent number | US RE31238E (click link for details and documents via Google Patents) |
|---|---|
| Title | Electrographic copier with one-piece belt and styli |
| Inventors | Jon C. Mutton, Peter J. Unger |
| Company | Tektronix Inc |
| Filing date | 1979-11-13 |
| Grant date | 1983-05-10 |