Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6177898 | Method and apparatus for representing an analog waveform as digital messages | — | 2001-01-23 |
| 6020840 | Method and apparatus for representing analog waveforms in digital form based on a multiplier, elapsed time and polarity | — | 2000-02-01 |
| 5815662 | Predictive memory caching for media-on-demand systems | — | 1998-09-29 |
| 5387766 | Scale with abuse detection and recordal system | David Teller | 1995-02-07 |
| 4961533 | Inventory control system | David Teller, Richard Sheryll | 1990-10-09 |