Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680455 | Digital signature generator /verifier/ recorder (DS-GVR) for analog transmissions | Charles H. Bennett | 1997-10-21 |
| 5598473 | Digital signature generator/verifier/recorder (DS-GVR) for analog transmissions | Charles H. Bennett | 1997-01-28 |
| 5592529 | Telephone inadvertent off-hook condition detector | — | 1997-01-07 |