Patent US 3924198A
| 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 |