Patent US 3924198A
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| Patent number | US 3924198A (click link for details and documents via Google Patents) |
|---|---|
| Title | Transistor amplifier having single control to simultaneously adjust level input resistance and input voltage |
| Inventors | Thor Hallen |
| Company | Tektronix Inc |
| Filing date | 1971-08-12 |
| Grant date | 1975-12-02 |