Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5384564 | Battery saving arrangement for selectively addressable, portable receivers | William H. Dittmer | 1995-01-24 |
| 5157405 | Hunting arrow tracking system | Roy L. Holmes | 1992-10-20 |
| 4644345 | Interleaved dual bank encoder | — | 1987-02-17 |
| 4431990 | Selective call communication receiver | William H. Dittmer | 1984-02-14 |
| 4429279 | Variable bandwidth filter | William H. Dittmer | 1984-01-31 |
| 4419765 | Signal absence detector | William H. Dittmer | 1983-12-06 |
| 4385398 | Selective call communication receiver | William H. Dittmer | 1983-05-24 |