Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6265974 | Systems and methods for monitoring spatial relationship between mobile objects | Michael R. D'Angelo, Geoffrey M. Eggert, Joseph E. Qualitz | 2001-07-24 |
| 6133830 | Motion sensitive anti-theft device with alarm screening | Michael R. D'Angelo, Geoffrey M. Eggert, Joseph E. Qualitz | 2000-10-17 |
| 5963131 | Anti-theft device with alarm screening | Michael R. D'Angelo, Geoffrey M. Eggert, Joseph E. Qualitz | 1999-10-05 |
| 4445501 | Circuits for determining very accurately the position of a device inside biological tissue | — | 1984-05-01 |
| 4416289 | Circuits for determining very accurately the position of a device inside biological tissue | — | 1983-11-22 |