Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320398 | Minimizing harmonic distortion apparatus | — | 1982-03-16 |
| 4268751 | Infrared breath analyzer | Fred M. Thul, Douglas R. Vogel | 1981-05-19 |
| 4231039 | Radar speedometer | James L. Witler | 1980-10-28 |