Patent US 4282456A
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| Patent number | US 4282456A (click link for details and documents via Google Patents) |
|---|---|
| Title | Faceplate for an electrostatic printing tube and method of making same |
| Inventors | William W. Stein |
| Company | Tektronix Inc |
| Filing date | 1978-09-08 |
| Grant date | 1981-08-04 |