Patent US 4903285A
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| Patent number | US 4903285A (click link for details and documents via Google Patents) |
|---|---|
| Title | Efficiency shift register |
| Inventors | Dan Knierim, Martin S. Denham |
| Company | Tektronix Inc |
| Filing date | 1989-02-24 |
| Grant date | 1990-02-20 |