Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7629880 | System, method and device for detecting a siren | Louis A. Stilp, Larry V. Dodds | 2009-12-08 |
| 6337711 | Transmission performance testing | R. V. C. Dickinson | 2002-01-08 |
| 4864731 | Measurement method and apparatus | Walter F. Kile | 1989-09-12 |